MC

180d_3434

D-altrose⟶L-altrose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-altrose. Which one of the following Fischer projections is of the monosaccharide L-altrose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

7990_faa9

D-glycero-D-talo-heptose⟶L-glycero-L-talo-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-talo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-talo-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

90e4_7328

D-allo-2-heptulose⟶L-allo-2-heptulose

. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-allo-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-allo-2-heptulose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

e8ab_ae68

D-glycero-D-gulo-heptose⟶L-glycero-L-gulo-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-gulo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-gulo-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

5679_40c4

D-glycero-D-gluco-heptose⟶L-glycero-L-gluco-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-gluco-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-gluco-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

2ada_9860

D-mann-2-heptulose⟶L-mann-2-heptulose

. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-mann-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-mann-2-heptulose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

1e1f_7a98

D-xylose⟶L-xylose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-xylose. Which one of the following Fischer projections is of the monosaccharide L-xylose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

53ad_1b59

D-mannose⟶L-mannose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-mannose. Which one of the following Fischer projections is of the monosaccharide L-mannose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

d762_6a78

D-glycero-D-galacto-heptose⟶L-glycero-L-galacto-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-galacto-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-galacto-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

3c46_6870

D-glycero-D-allo-heptose⟶L-glycero-L-allo-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-allo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-allo-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

d63a_bd8e

D-glycero-L-gluco-heptose⟶L-glycero-L-gluco-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-gluco-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-gluco-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

9608_5d13

D-gulose⟶L-gulose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-gulose. Which one of the following Fischer projections is of the monosaccharide L-gulose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

a3a4_46f8

D-talose⟶L-talose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-talose. Which one of the following Fischer projections is of the monosaccharide L-talose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

560f_4823

D-3-keto-allose⟶L-3-keto-allose

. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-3-keto-allose. Which one of the following Fischer projections is of the monosaccharide L-3-keto-allose?

A.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

8490_b4e3

D-altro-3-heptulose⟶L-altro-3-heptulose

. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-altro-3-heptulose. Which one of the following Fischer projections is of the monosaccharide L-altro-3-heptulose?

A.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct MC

b05b_c89a

D-3-keto-glucose⟶L-3-keto-glucose

. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-3-keto-glucose. Which one of the following Fischer projections is of the monosaccharide L-3-keto-glucose?

A.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

9a11_3a9d

D-ido-2-heptulose⟶L-ido-2-heptulose

. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-ido-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-ido-2-heptulose?

A.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

5149_9b71

D-manno-3-heptulose⟶L-manno-3-heptulose

. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-manno-3-heptulose. Which one of the following Fischer projections is of the monosaccharide L-manno-3-heptulose?

A.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct C.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

69af_d46e

D-psicose⟶L-psicose

. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-psicose. Which one of the following Fischer projections is of the monosaccharide L-psicose?

A.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

6139_7cfd

D-glycero-L-altro-heptose⟶L-glycero-L-altro-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-altro-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-altro-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

72ef_5a0a

D-glycero-L-talo-heptose⟶L-glycero-L-talo-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-talo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-talo-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

3739_57b5

D-glycero-L-allo-heptose⟶L-glycero-L-allo-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-allo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-allo-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

b81e_fb82

D-talo-2-heptulose⟶L-talo-2-heptulose

. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-talo-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-talo-2-heptulose?

A.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

cf6c_3040

D-sorbose⟶L-sorbose

. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-sorbose. Which one of the following Fischer projections is of the monosaccharide L-sorbose?

A.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

7e73_bd39

D-lyxose⟶L-lyxose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-lyxose. Which one of the following Fischer projections is of the monosaccharide L-lyxose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

a5eb_1b4f

D-tagatose⟶L-tagatose

. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-tagatose. Which one of the following Fischer projections is of the monosaccharide L-tagatose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

0446_1ec1

D-gluco-2-heptulose⟶L-gluco-2-heptulose

. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-gluco-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-gluco-2-heptulose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

e03f_f636

D-arabinaose⟶L-arabinaose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-arabinaose. Which one of the following Fischer projections is of the monosaccharide L-arabinaose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

ab74_4a62

D-glycero-D-ido-heptose⟶L-glycero-L-ido-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-ido-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-ido-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

e3d4_83f2

D-glycero-L-gulo-heptose⟶L-glycero-L-gulo-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-gulo-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-gulo-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

6120_8fca

D-galacto-2-heptulose⟶L-galacto-2-heptulose

. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-galacto-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-galacto-2-heptulose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct D.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

b7d0_332e

D-ribose⟶L-ribose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-ribose. Which one of the following Fischer projections is of the monosaccharide L-ribose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

e922_e781

D-glycero-L-ido-heptose⟶L-glycero-L-ido-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-ido-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-ido-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

8dfe_1fd5

D-glycero-L-galacto-heptose⟶L-glycero-L-galacto-heptose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-galacto-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-galacto-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

3c6f_d407

D-gulo-2-heptulose⟶L-gulo-2-heptulose

. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-gulo-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-gulo-2-heptulose?

A.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

a285_db5b

D-3-keto-mannose⟶L-3-keto-mannose

. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-3-keto-mannose. Which one of the following Fischer projections is of the monosaccharide L-3-keto-mannose?

A.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

7a27_1632

D-glycero-D-manno-heptose⟶L-glycero-L-manno-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-manno-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-manno-heptose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

d1ef_663c

D-allose⟶L-allose

H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-allose. Which one of the following Fischer projections is of the monosaccharide L-allose?

A.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

b0bf_1e40

D-3-keto-altrose⟶L-3-keto-altrose

. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-3-keto-altrose. Which one of the following Fischer projections is of the monosaccharide L-3-keto-altrose?

A.
. . CH2OH
H . . . . OH
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
H . . . . OH
. . . .
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
. . CH2OH
HO . . . . H
. . . .
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct E.
. . CH2OH
HO . . . . H
. . . .
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect MC

3719_e596

D-altro-2-heptulose⟶L-altro-2-heptulose

. . CH2OH
. ==O 
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-altro-2-heptulose. Which one of the following Fischer projections is of the monosaccharide L-altro-2-heptulose?

A.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect B.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
. . CH2OH
. ==O 
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct D.
. . CH2OH
. ==O 
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
. . CH2OH
. ==O 
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

fa64_0682

D-glycero-L-manno-heptose⟶L-glycero-L-manno-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-L-manno-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-manno-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect MC

e17a_b1b2

D-glycero-D-altro-heptose⟶L-glycero-L-altro-heptose

H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH

Above is a Fischer projection of the monosaccharide D-glycero-D-altro-heptose. Which one of the following Fischer projections is of the monosaccharide L-glycero-L-altro-heptose?

A.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect B.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect C.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
H . . . . OH
. . . .
. . CH2OH
Incorrect D.
H  .  O
. \   // .
. . C . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Incorrect E.
H  .  O
. \   // .
. . C . .
H . . . . OH
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
HO . . . . H
. . . .
. . CH2OH
Correct