4adf_8d01

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

arginine Incorrect glutamate Correct glutamine Incorrect glycine Incorrect serine Incorrect MC

2c9f_cd7c

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct arginine Incorrect glutamic acid Incorrect methionine Incorrect valine Incorrect MC

2c9f_df78

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct arginine Incorrect isoleucine Incorrect tyrosine Incorrect valine Incorrect MC

bd42_e529

Which one of the following amino acids correspond to the description 'a aromatic amino acid with a side chain containing a phenol (-C₆H₆OH) group, derived from phenylalanine'.

glutamate Incorrect lysine Incorrect proline Incorrect tyrosine Correct valine Incorrect MC

7dc8_d3fb

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

glycine Correct isoleucine Incorrect leucine Incorrect methionine Incorrect phenylalanine Incorrect MC

08a0_87e5

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

alanine Incorrect aspartate Correct histidine Incorrect leucine Incorrect serine Incorrect MC

6164_db0f

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

aspartate Incorrect glutamic acid Incorrect serine Correct threonine Incorrect tyrosine Incorrect MC

08a0_9910

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

alanine Incorrect arginine Incorrect aspartic acid Correct glutamate Incorrect threonine Incorrect MC

19f6_b0c0

Which one of the following amino acids correspond to the description 'a polar amino acid with a longer amine-substituted carboxylate (amide) -C(=O)NH₂ group'.

arginine Incorrect glutamine Correct leucine Incorrect threonine Incorrect valine Incorrect MC

109d_f93a

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing 3 nitrogen atoms (guanidinium)'.

arginine Correct aspartate Incorrect glutamine Incorrect lysine Incorrect valine Incorrect MC

a707_df85

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with the shortest hydrophobic side chain'.

arginine Incorrect aspartic acid Incorrect glutamic acid Incorrect tyrosine Incorrect valine Correct MC

6164_5d00

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

arginine Incorrect histidine Incorrect isoleucine Incorrect leucine Incorrect serine Correct MC

2c9f_48c4

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct glutamic acid Incorrect serine Incorrect threonine Incorrect tyrosine Incorrect MC

e971_d0da

Which one of the following amino acids correspond to the description 'a non-polar amino acid with a side chain containing a sulfur atom that is NOT available for chemical reactions'.

glycine Incorrect lysine Incorrect methionine Correct proline Incorrect serine Incorrect MC

ea92_4eec

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

glutamic acid Incorrect isoleucine Correct lysine Incorrect methionine Incorrect phenylalanine Incorrect MC

6818_f9c0

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

aspartic acid Incorrect cysteine Correct histidine Incorrect phenylalanine Incorrect serine Incorrect MC

e624_56de

Which one of the following amino acids correspond to the description 'a polar amino acid with a thiol (-SH) group that can form disulfide bonds'.

asparagine Incorrect cysteine Correct glutamine Incorrect leucine Incorrect lysine Incorrect MC

19f6_84b1

Which one of the following amino acids correspond to the description 'a polar amino acid with a longer amine-substituted carboxylate (amide) -C(=O)NH₂ group'.

asparagine Incorrect aspartate Incorrect cysteine Incorrect glutamine Correct phenylalanine Incorrect MC

fa64_2859

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

alanine Incorrect arginine Incorrect aspartic acid Incorrect cysteine Correct leucine Incorrect MC

109d_f2e7

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing 3 nitrogen atoms (guanidinium)'.

arginine Correct asparagine Incorrect cysteine Incorrect glutamic acid Incorrect tryptophan Incorrect MC

4adf_58b4

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

glutamate Correct glycine Incorrect leucine Incorrect lysine Incorrect serine Incorrect MC

2c9f_df8b

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct aspartate Incorrect glutamate Incorrect histidine Incorrect valine Incorrect MC

001f_737b

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

alanine Incorrect asparagine Incorrect glutamate Incorrect glycine Correct proline Incorrect MC

8ba6_41ab

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

glutamic acid Incorrect lysine Incorrect serine Incorrect threonine Incorrect tryptophan Correct MC

0f1d_6d75

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

asparagine Incorrect proline Correct threonine Incorrect tyrosine Incorrect valine Incorrect MC

fa64_d605

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

alanine Incorrect arginine Incorrect cysteine Correct methionine Incorrect tryptophan Incorrect MC

e624_af01

Which one of the following amino acids correspond to the description 'a polar amino acid with a thiol (-SH) group that can form disulfide bonds'.

cysteine Correct glutamate Incorrect leucine Incorrect serine Incorrect valine Incorrect MC

7d23_1892

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

glutamate Incorrect glutamine Incorrect leucine Correct serine Incorrect valine Incorrect MC

6f6d_5feb

Which one of the following amino acids correspond to the description 'an aromatic amino acid with a side chain containing a 5-membered nitrogenous ring and a pKa close to pH 7'.

glutamine Incorrect histidine Correct lysine Incorrect methionine Incorrect tryptophan Incorrect MC

db87_dfd8

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

glutamic acid Incorrect glutamine Incorrect glycine Incorrect lysine Incorrect valine Correct MC

6164_ff7f

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

leucine Incorrect lysine Incorrect serine Correct threonine Incorrect tyrosine Incorrect MC

db87_5a84

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

cysteine Incorrect glycine Incorrect histidine Incorrect isoleucine Incorrect valine Correct MC

db87_b83c

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

asparagine Incorrect isoleucine Incorrect phenylalanine Incorrect threonine Incorrect valine Correct MC

2163_e332

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of isoleucine'.

arginine Incorrect leucine Correct methionine Incorrect phenylalanine Incorrect proline Incorrect MC

d1d2_7452

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing an amine group'.

glutamine Incorrect lysine Correct phenylalanine Incorrect proline Incorrect valine Incorrect MC

db87_0ba6

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

glutamic acid Incorrect methionine Incorrect serine Incorrect tyrosine Incorrect valine Correct MC

8d37_f579

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct arginine Incorrect glutamic acid Incorrect threonine Incorrect valine Incorrect MC

05d4_5cd4

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a shorter version of leucine'.

aspartic acid Incorrect glutamate Incorrect proline Incorrect tyrosine Incorrect valine Correct MC

188c_eb72

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of leucine'.

glutamine Incorrect isoleucine Correct proline Incorrect serine Incorrect tryptophan Incorrect MC

08a0_fdf2

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartate Correct isoleucine Incorrect lysine Incorrect tryptophan Incorrect valine Incorrect MC

7dc8_5935

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

arginine Incorrect glutamine Incorrect glycine Correct histidine Incorrect phenylalanine Incorrect MC

2163_0764

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of isoleucine'.

alanine Incorrect aspartic acid Incorrect leucine Correct serine Incorrect threonine Incorrect MC

05d4_cb0f

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a shorter version of leucine'.

glutamate Incorrect lysine Incorrect methionine Incorrect tryptophan Incorrect valine Correct MC

001f_ebf7

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

aspartic acid Incorrect cysteine Incorrect glycine Correct phenylalanine Incorrect proline Incorrect MC

08a0_cbb0

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartic acid Correct cysteine Incorrect histidine Incorrect leucine Incorrect proline Incorrect MC

08a0_56eb

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartic acid Correct histidine Incorrect isoleucine Incorrect phenylalanine Incorrect proline Incorrect MC

0f1d_bfd7

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

arginine Incorrect glutamate Incorrect histidine Incorrect phenylalanine Incorrect proline Correct MC

001f_5f77

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

aspartic acid Incorrect glutamate Incorrect glycine Correct isoleucine Incorrect leucine Incorrect MC

2c9f_8a2d

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct aspartate Incorrect glutamate Incorrect glutamine Incorrect serine Incorrect MC

e624_9e0d

Which one of the following amino acids correspond to the description 'a polar amino acid with a thiol (-SH) group that can form disulfide bonds'.

aspartic acid Incorrect cysteine Correct glutamic acid Incorrect lysine Incorrect tryptophan Incorrect MC

4adf_fe69

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

arginine Incorrect glutamic acid Correct glycine Incorrect histidine Incorrect valine Incorrect MC

db87_4afd

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

glycine Incorrect methionine Incorrect threonine Incorrect tyrosine Incorrect valine Correct MC

6164_e234

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

alanine Incorrect aspartate Incorrect cysteine Incorrect serine Correct threonine Incorrect MC

4adf_a04f

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

cysteine Incorrect glutamate Correct isoleucine Incorrect leucine Incorrect methionine Incorrect MC

001f_77e0

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

arginine Incorrect glycine Correct leucine Incorrect phenylalanine Incorrect proline Incorrect MC

2c9f_0a3e

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct cysteine Incorrect glutamine Incorrect histidine Incorrect tyrosine Incorrect MC

08a0_29ec

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

arginine Incorrect aspartate Correct cysteine Incorrect lysine Incorrect tyrosine Incorrect MC

001f_683f

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

aspartic acid Incorrect glutamine Incorrect glycine Correct leucine Incorrect tryptophan Incorrect MC

e041_8e44

Which one of the following amino acids correspond to the description 'a non-polar amino acid with an aromatic side chain containing a single benzene (-C₆H₆) ring'.

arginine Incorrect cysteine Incorrect histidine Incorrect phenylalanine Correct threonine Incorrect MC

fbd4_d90e

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

alanine Incorrect asparagine Incorrect glycine Incorrect leucine Incorrect serine Correct MC

4adf_49b6

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

glutamic acid Correct methionine Incorrect phenylalanine Incorrect tryptophan Incorrect valine Incorrect MC

a707_fe51

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with the shortest hydrophobic side chain'.

alanine Incorrect asparagine Incorrect histidine Incorrect tryptophan Incorrect valine Correct MC

8ba6_2a3d

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

cysteine Incorrect glycine Incorrect lysine Incorrect threonine Incorrect tryptophan Correct MC

08a0_d916

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartic acid Correct leucine Incorrect lysine Incorrect phenylalanine Incorrect proline Incorrect MC

fa64_05c0

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

aspartic acid Incorrect cysteine Correct glycine Incorrect isoleucine Incorrect proline Incorrect MC

bd42_4bb7

Which one of the following amino acids correspond to the description 'a aromatic amino acid with a side chain containing a phenol (-C₆H₆OH) group, derived from phenylalanine'.

cysteine Incorrect glutamic acid Incorrect leucine Incorrect tyrosine Correct valine Incorrect MC

4adf_f5ea

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

glutamic acid Correct isoleucine Incorrect methionine Incorrect tryptophan Incorrect tyrosine Incorrect MC

c7c7_d1d3

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

alanine Incorrect asparagine Incorrect lysine Incorrect threonine Correct tryptophan Incorrect MC

fbd4_349f

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

asparagine Incorrect lysine Incorrect methionine Incorrect serine Correct threonine Incorrect MC

7dc8_e8f6

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

arginine Incorrect asparagine Incorrect glutamic acid Incorrect glutamine Incorrect glycine Correct MC

7dc8_5db1

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

asparagine Incorrect glycine Correct isoleucine Incorrect leucine Incorrect tryptophan Incorrect MC

0f1d_7daa

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

aspartate Incorrect leucine Incorrect phenylalanine Incorrect proline Correct threonine Incorrect MC

109d_091a

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing 3 nitrogen atoms (guanidinium)'.

arginine Correct aspartate Incorrect glycine Incorrect lysine Incorrect proline Incorrect MC

6818_c489

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

cysteine Correct glutamic acid Incorrect histidine Incorrect leucine Incorrect phenylalanine Incorrect MC

6164_f20d

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

aspartate Incorrect glycine Incorrect serine Correct threonine Incorrect valine Incorrect MC

19f6_50ff

Which one of the following amino acids correspond to the description 'a polar amino acid with a longer amine-substituted carboxylate (amide) -C(=O)NH₂ group'.

alanine Incorrect asparagine Incorrect glutamine Correct methionine Incorrect serine Incorrect MC

08a0_a650

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

arginine Incorrect asparagine Incorrect aspartate Correct methionine Incorrect proline Incorrect MC

05d4_83aa

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a shorter version of leucine'.

glutamic acid Incorrect glutamine Incorrect methionine Incorrect proline Incorrect valine Correct MC

e041_ff48

Which one of the following amino acids correspond to the description 'a non-polar amino acid with an aromatic side chain containing a single benzene (-C₆H₆) ring'.

arginine Incorrect aspartate Incorrect phenylalanine Correct serine Incorrect valine Incorrect MC

2163_a002

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of isoleucine'.

glycine Incorrect histidine Incorrect leucine Correct phenylalanine Incorrect serine Incorrect MC

e1bb_a4b5

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with only a methyl group (-CH₃) attached to the α-carbon'.

alanine Correct arginine Incorrect asparagine Incorrect glutamate Incorrect methionine Incorrect MC

8d37_c567

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct aspartic acid Incorrect cysteine Incorrect glutamate Incorrect histidine Incorrect MC

2df2_4c34

Which one of the following amino acids correspond to the description 'a small amino acid with a single hydrogen atom as its side chain'.

alanine Incorrect glycine Correct histidine Incorrect lysine Incorrect proline Incorrect MC

e1bb_96c6

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with only a methyl group (-CH₃) attached to the α-carbon'.

alanine Correct asparagine Incorrect lysine Incorrect methionine Incorrect tryptophan Incorrect MC

08a0_27e2

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

alanine Incorrect aspartic acid Correct isoleucine Incorrect leucine Incorrect tryptophan Incorrect MC

bd42_d4d2

Which one of the following amino acids correspond to the description 'a aromatic amino acid with a side chain containing a phenol (-C₆H₆OH) group, derived from phenylalanine'.

alanine Incorrect aspartic acid Incorrect glutamate Incorrect lysine Incorrect tyrosine Correct MC

fbd4_5f6a

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

asparagine Incorrect aspartic acid Incorrect glutamate Incorrect serine Correct tyrosine Incorrect MC

ea92_7215

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

glutamate Incorrect glycine Incorrect isoleucine Correct serine Incorrect tryptophan Incorrect MC

fbd4_a586

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

arginine Incorrect leucine Incorrect proline Incorrect serine Correct threonine Incorrect MC

c30e_10bd

Which one of the following amino acids correspond to the description 'a polar amino acid that can form disulfide bridges'.

aspartate Incorrect cysteine Correct isoleucine Incorrect phenylalanine Incorrect tryptophan Incorrect MC

0f1d_374b

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

aspartic acid Incorrect glutamate Incorrect isoleucine Incorrect methionine Incorrect proline Correct MC

6818_3912

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

alanine Incorrect cysteine Correct glutamic acid Incorrect histidine Incorrect tryptophan Incorrect MC

7dc8_d4b2

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

arginine Incorrect aspartate Incorrect glycine Correct phenylalanine Incorrect tryptophan Incorrect MC

188c_f7be

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of leucine'.

cysteine Incorrect histidine Incorrect isoleucine Correct threonine Incorrect tryptophan Incorrect MC

e1bb_d2b2

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with only a methyl group (-CH₃) attached to the α-carbon'.

alanine Correct asparagine Incorrect glutamate Incorrect lysine Incorrect tyrosine Incorrect MC

2c9f_eae5

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct asparagine Incorrect glutamine Incorrect histidine Incorrect methionine Incorrect MC

2c9f_aa85

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct arginine Incorrect glycine Incorrect methionine Incorrect tryptophan Incorrect MC

db87_ea66

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

serine Incorrect threonine Incorrect tryptophan Incorrect tyrosine Incorrect valine Correct MC

8d37_ecba

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct cysteine Incorrect histidine Incorrect methionine Incorrect threonine Incorrect MC

0dc7_7a88

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest polar side chain'.

asparagine Incorrect cysteine Incorrect glutamic acid Incorrect phenylalanine Incorrect serine Correct MC

fa64_7bd0

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

arginine Incorrect cysteine Correct glycine Incorrect isoleucine Incorrect proline Incorrect MC

fa64_c4d5

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

arginine Incorrect cysteine Correct glutamate Incorrect phenylalanine Incorrect serine Incorrect MC

c7c7_4887

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

alanine Incorrect glycine Incorrect phenylalanine Incorrect serine Incorrect threonine Correct MC

4adf_b7a2

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

arginine Incorrect aspartate Incorrect glutamate Correct leucine Incorrect tyrosine Incorrect MC

05d4_9563

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a shorter version of leucine'.

proline Incorrect serine Incorrect tryptophan Incorrect tyrosine Incorrect valine Correct MC

d1d2_902d

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing an amine group'.

alanine Incorrect cysteine Incorrect isoleucine Incorrect lysine Correct threonine Incorrect MC

6164_4a8b

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

arginine Incorrect methionine Incorrect phenylalanine Incorrect serine Correct valine Incorrect MC

68d4_a5b2

Which one of the following amino acids correspond to the description 'a polar amino acid with a shorter amine-substituted carboxylate (amide) -C(=O)NH₂ group'.

asparagine Correct aspartic acid Incorrect glutamate Incorrect glycine Incorrect phenylalanine Incorrect MC

2163_761e

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of isoleucine'.

aspartic acid Incorrect leucine Correct tryptophan Incorrect tyrosine Incorrect valine Incorrect MC

08a0_4a0f

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

asparagine Incorrect aspartic acid Correct histidine Incorrect proline Incorrect valine Incorrect MC

7d23_8d98

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

aspartic acid Incorrect leucine Correct phenylalanine Incorrect tyrosine Incorrect valine Incorrect MC

fbd4_2336

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

histidine Incorrect methionine Incorrect phenylalanine Incorrect serine Correct threonine Incorrect MC

e624_8152

Which one of the following amino acids correspond to the description 'a polar amino acid with a thiol (-SH) group that can form disulfide bonds'.

arginine Incorrect cysteine Correct glutamic acid Incorrect proline Incorrect threonine Incorrect MC

8d37_b5e3

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct asparagine Incorrect aspartate Incorrect methionine Incorrect tryptophan Incorrect MC

fa64_698f

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ SH

H–N–H
'.

cysteine Correct glutamine Incorrect histidine Incorrect isoleucine Incorrect tryptophan Incorrect MC

08a0_5b38

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartate Correct glutamate Incorrect glutamine Incorrect isoleucine Incorrect methionine Incorrect MC

6f6d_8f1d

Which one of the following amino acids correspond to the description 'an aromatic amino acid with a side chain containing a 5-membered nitrogenous ring and a pKa close to pH 7'.

glutamate Incorrect histidine Correct isoleucine Incorrect serine Incorrect threonine Incorrect MC

6164_3dd3

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

arginine Incorrect aspartate Incorrect glutamate Incorrect serine Correct tryptophan Incorrect MC

88b9_e0b5

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a longer version of valine'.

asparagine Incorrect histidine Incorrect leucine Correct lysine Incorrect serine Incorrect MC

0f1d_e788

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

asparagine Incorrect aspartate Incorrect histidine Incorrect methionine Incorrect proline Correct MC

8ba6_a6e7

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

asparagine Incorrect glutamine Incorrect histidine Incorrect serine Incorrect tryptophan Correct MC

0f1d_c232

Which one of the following amino acids correspond to the description 'a non-polar amino acid where the side chain is bonded to the backbone amine, resulting in a rigid cyclic structure'.

arginine Incorrect glycine Incorrect phenylalanine Incorrect proline Correct valine Incorrect MC

6818_8f86

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

alanine Incorrect cysteine Correct leucine Incorrect proline Incorrect threonine Incorrect MC

ea92_1ab6

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

aspartate Incorrect glutamine Incorrect isoleucine Correct leucine Incorrect lysine Incorrect MC

d1d2_37ce

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing an amine group'.

alanine Incorrect cysteine Incorrect glutamic acid Incorrect lysine Correct valine Incorrect MC

c30e_fc6a

Which one of the following amino acids correspond to the description 'a polar amino acid that can form disulfide bridges'.

aspartate Incorrect cysteine Correct glycine Incorrect tryptophan Incorrect valine Incorrect MC

0dc7_4126

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest polar side chain'.

asparagine Incorrect cysteine Incorrect glycine Incorrect leucine Incorrect serine Correct MC

bd42_5648

Which one of the following amino acids correspond to the description 'a aromatic amino acid with a side chain containing a phenol (-C₆H₆OH) group, derived from phenylalanine'.

methionine Incorrect serine Incorrect threonine Incorrect tryptophan Incorrect tyrosine Correct MC

6818_df21

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

cysteine Correct glutamic acid Incorrect glutamine Incorrect proline Incorrect serine Incorrect MC

4adf_4849

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

glutamate Correct isoleucine Incorrect proline Incorrect serine Incorrect threonine Incorrect MC

2df2_d35a

Which one of the following amino acids correspond to the description 'a small amino acid with a single hydrogen atom as its side chain'.

aspartate Incorrect glutamine Incorrect glycine Correct methionine Incorrect proline Incorrect MC

db87_9b06

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

alanine Incorrect histidine Incorrect methionine Incorrect serine Incorrect valine Correct MC

7dc8_26e0

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

arginine Incorrect asparagine Incorrect glutamine Incorrect glycine Correct valine Incorrect MC

e1bb_be54

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with only a methyl group (-CH₃) attached to the α-carbon'.

alanine Correct arginine Incorrect lysine Incorrect phenylalanine Incorrect proline Incorrect MC

4adf_374b

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

glutamic acid Correct glycine Incorrect leucine Incorrect lysine Incorrect tryptophan Incorrect MC

4adf_6d7a

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

alanine Incorrect asparagine Incorrect glutamate Correct leucine Incorrect phenylalanine Incorrect MC

6164_dec3

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

cysteine Incorrect lysine Incorrect serine Correct tyrosine Incorrect valine Incorrect MC

08a0_63d3

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

arginine Incorrect aspartic acid Correct isoleucine Incorrect methionine Incorrect tyrosine Incorrect MC

88b9_4553

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a longer version of valine'.

glutamate Incorrect glutamine Incorrect glycine Incorrect leucine Correct proline Incorrect MC

ea92_ed3d

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

alanine Incorrect aspartate Incorrect glutamine Incorrect isoleucine Correct leucine Incorrect MC

4adf_26f5

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

asparagine Incorrect glutamic acid Correct glycine Incorrect phenylalanine Incorrect tryptophan Incorrect MC

8ba6_80c6

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

isoleucine Incorrect lysine Incorrect phenylalanine Incorrect tryptophan Correct tyrosine Incorrect MC

fbd4_d842

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

alanine Incorrect cysteine Incorrect isoleucine Incorrect phenylalanine Incorrect serine Correct MC

8d37_7ca6

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct asparagine Incorrect glutamine Incorrect serine Incorrect threonine Incorrect MC

88b9_0066

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a longer version of valine'.

alanine Incorrect asparagine Incorrect histidine Incorrect leucine Correct threonine Incorrect MC

8ba6_f8d3

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

alanine Incorrect glutamate Incorrect histidine Incorrect threonine Incorrect tryptophan Correct MC

7dc8_e8b1

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

aspartic acid Incorrect glutamate Incorrect glutamine Incorrect glycine Correct leucine Incorrect MC

4adf_8f43

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

alanine Incorrect aspartate Incorrect cysteine Incorrect glutamate Correct lysine Incorrect MC

08a0_cfed

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

alanine Incorrect aspartate Correct glutamate Incorrect leucine Incorrect tryptophan Incorrect MC

8d37_4914

Which one of the following amino acids correspond to the description '

H

^–OOC C_α CH₃

NH₃⁺
'.

alanine Correct aspartic acid Incorrect histidine Incorrect leucine Incorrect methionine Incorrect MC

c7c7_5356

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

cysteine Incorrect glutamic acid Incorrect proline Incorrect threonine Correct valine Incorrect MC

c7c7_e85a

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

glycine Incorrect histidine Incorrect phenylalanine Incorrect proline Incorrect threonine Correct MC

08a0_a00d

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartate Correct isoleucine Incorrect phenylalanine Incorrect tryptophan Incorrect valine Incorrect MC

109d_e4dd

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing 3 nitrogen atoms (guanidinium)'.

arginine Correct aspartate Incorrect histidine Incorrect tryptophan Incorrect valine Incorrect MC

19f6_db27

Which one of the following amino acids correspond to the description 'a polar amino acid with a longer amine-substituted carboxylate (amide) -C(=O)NH₂ group'.

glutamine Correct leucine Incorrect proline Incorrect tryptophan Incorrect valine Incorrect MC

6164_f7a7

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

alanine Incorrect aspartic acid Incorrect proline Incorrect serine Correct valine Incorrect MC

7dc8_4fe2

Which one of the following amino acids correspond to the description 'a small amino acid with the simple chemical formula NH₂-CH₂-COOH'.

glycine Correct leucine Incorrect lysine Incorrect proline Incorrect tyrosine Incorrect MC

001f_44ed

Which one of the following amino acids correspond to the description '

H

^–OOC C_α H

NH₃⁺
'.

asparagine Incorrect glycine Correct leucine Incorrect methionine Incorrect tryptophan Incorrect MC

2c9f_3718

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct glutamate Incorrect glycine Incorrect proline Incorrect threonine Incorrect MC

c7c7_e536

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

glutamic acid Incorrect glutamine Incorrect histidine Incorrect leucine Incorrect threonine Correct MC

ea92_8471

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

glutamine Incorrect isoleucine Correct lysine Incorrect phenylalanine Incorrect valine Incorrect MC

6818_5e8a

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

arginine Incorrect aspartic acid Incorrect cysteine Correct glutamic acid Incorrect glutamine Incorrect MC

7d23_12cd

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

arginine Incorrect aspartate Incorrect glutamic acid Incorrect leucine Correct tyrosine Incorrect MC

6164_f5c0

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

arginine Incorrect glutamine Incorrect phenylalanine Incorrect serine Correct valine Incorrect MC

2c9f_b6cc

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with a single methyl group (-CH₃) as its side chain'.

alanine Correct glutamine Incorrect isoleucine Incorrect serine Incorrect tyrosine Incorrect MC

6164_ffb3

Which one of the following amino acids correspond to the description '

O=C–OH

H C_α CH₂ OH

H–N–H
'.

asparagine Incorrect aspartate Incorrect serine Correct tryptophan Incorrect tyrosine Incorrect MC

e041_7a75

Which one of the following amino acids correspond to the description 'a non-polar amino acid with an aromatic side chain containing a single benzene (-C₆H₆) ring'.

glutamate Incorrect phenylalanine Correct serine Incorrect threonine Incorrect tryptophan Incorrect MC

188c_2d32

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of leucine'.

arginine Incorrect isoleucine Correct proline Incorrect serine Incorrect tryptophan Incorrect MC

188c_dae7

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of leucine'.

asparagine Incorrect glutamine Incorrect isoleucine Correct methionine Incorrect tryptophan Incorrect MC

0dc7_0661

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest polar side chain'.

asparagine Incorrect glutamate Incorrect glutamine Incorrect serine Correct tryptophan Incorrect MC

08a0_b6f9

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

aspartic acid Correct glycine Incorrect proline Incorrect serine Incorrect tyrosine Incorrect MC

fbd4_fef3

Which one of the following amino acids correspond to the description 'a polar amino acid with the smallest side chain containing a hydroxyl group (-OH)'.

asparagine Incorrect cysteine Incorrect methionine Incorrect serine Correct threonine Incorrect MC

ea92_c95b

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

alanine Incorrect glutamate Incorrect glutamine Incorrect isoleucine Correct phenylalanine Incorrect MC

88b9_357b

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a longer version of valine'.

alanine Incorrect glutamic acid Incorrect isoleucine Incorrect leucine Correct methionine Incorrect MC

6f6d_661d

Which one of the following amino acids correspond to the description 'an aromatic amino acid with a side chain containing a 5-membered nitrogenous ring and a pKa close to pH 7'.

glutamic acid Incorrect histidine Correct methionine Incorrect threonine Incorrect tryptophan Incorrect MC

ea92_9910

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a valine with a extra methyl group (-CH₃) at the end'.

glutamate Incorrect isoleucine Correct leucine Incorrect lysine Incorrect methionine Incorrect MC

c30e_bfdb

Which one of the following amino acids correspond to the description 'a polar amino acid that can form disulfide bridges'.

aspartic acid Incorrect cysteine Correct lysine Incorrect methionine Incorrect phenylalanine Incorrect MC

109d_eef3

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing 3 nitrogen atoms (guanidinium)'.

arginine Correct histidine Incorrect proline Incorrect serine Incorrect tryptophan Incorrect MC

d1d2_4c58

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing an amine group'.

asparagine Incorrect aspartate Incorrect glutamine Incorrect leucine Incorrect lysine Correct MC

e1bb_ee5d

Which one of the following amino acids correspond to the description 'a non-polar amino acid, with only a methyl group (-CH₃) attached to the α-carbon'.

alanine Correct asparagine Incorrect histidine Incorrect methionine Incorrect phenylalanine Incorrect MC

6818_011b

Which one of the following amino acids correspond to the description 'a polar amino acid that is capable of thiol (-SH) chemistry'.

cysteine Correct glutamic acid Incorrect glycine Incorrect methionine Incorrect tryptophan Incorrect MC

7d23_5b93

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

alanine Incorrect asparagine Incorrect leucine Correct tyrosine Incorrect valine Incorrect MC

e971_7ad6

Which one of the following amino acids correspond to the description 'a non-polar amino acid with a side chain containing a sulfur atom that is NOT available for chemical reactions'.

alanine Incorrect methionine Correct threonine Incorrect tryptophan Incorrect tyrosine Incorrect MC

4adf_4eab

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

arginine Incorrect glutamate Correct leucine Incorrect lysine Incorrect tyrosine Incorrect MC

2163_7255

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is an isomer of isoleucine'.

aspartic acid Incorrect cysteine Incorrect glutamate Incorrect leucine Correct tyrosine Incorrect MC

7d23_1183

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

cysteine Incorrect glutamine Incorrect leucine Correct lysine Incorrect methionine Incorrect MC

05d4_2c3e

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a shorter version of leucine'.

arginine Incorrect histidine Incorrect isoleucine Incorrect methionine Incorrect valine Correct MC

6f6d_b381

Which one of the following amino acids correspond to the description 'an aromatic amino acid with a side chain containing a 5-membered nitrogenous ring and a pKa close to pH 7'.

histidine Correct lysine Incorrect phenylalanine Incorrect proline Incorrect tryptophan Incorrect MC

88b9_b342

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid that is a longer version of valine'.

alanine Incorrect leucine Correct phenylalanine Incorrect serine Incorrect valine Incorrect MC

08a0_80fa

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a small, carboxylate (-COOH) side chain'.

asparagine Incorrect aspartate Correct cysteine Incorrect isoleucine Incorrect valine Incorrect MC

bd42_9502

Which one of the following amino acids correspond to the description 'a aromatic amino acid with a side chain containing a phenol (-C₆H₆OH) group, derived from phenylalanine'.

asparagine Incorrect cysteine Incorrect histidine Incorrect leucine Incorrect tyrosine Correct MC

c7c7_20b4

Which one of the following amino acids correspond to the description 'a polar amino acid that is a methylated form of serine'.

aspartic acid Incorrect histidine Incorrect isoleucine Incorrect methionine Incorrect threonine Correct MC

4adf_7eef

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

aspartic acid Incorrect glutamate Correct lysine Incorrect phenylalanine Incorrect proline Incorrect MC

c30e_fcc4

Which one of the following amino acids correspond to the description 'a polar amino acid that can form disulfide bridges'.

alanine Incorrect cysteine Correct isoleucine Incorrect threonine Incorrect tryptophan Incorrect MC

7d23_b8a9

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated γ-carbon'.

glutamic acid Incorrect isoleucine Incorrect leucine Correct tyrosine Incorrect valine Incorrect MC

8ba6_85f6

Which one of the following amino acids correspond to the description 'an aromatic amino acid with the largest side chain consisting of a fused pair of rings'.

aspartic acid Incorrect glutamic acid Incorrect glutamine Incorrect proline Incorrect tryptophan Correct MC

db87_0766

Which one of the following amino acids correspond to the description 'a non-polar branched chain amino acid with a double methylated β-carbon'.

asparagine Incorrect glutamic acid Incorrect glutamine Incorrect glycine Incorrect valine Correct MC

d1d2_7a0e

Which one of the following amino acids correspond to the description 'a positively charged amino acid with a long, flexible side chain containing an amine group'.

arginine Incorrect aspartate Incorrect lysine Correct proline Incorrect tryptophan Incorrect MC

4adf_4c0a

Which one of the following amino acids correspond to the description 'a negatively charged amino acid with a large, carboxylate (-COOH) side chain'.

alanine Incorrect glutamate Correct phenylalanine Incorrect proline Incorrect tryptophan Incorrect