## DESCRIPTION
## Select the seven biochemical functional group that corresponds to the given description.
## ENDDESCRIPTION
## KEYWORDS('seven biochemical functional groups','descriptions','which one','multiple choice')
## DBsubject('Biochemistry')
## DBchapter('')
## DBsection('')
## Date('2026-07-12')
## Author('Neil R. Voss')
## Institution('Roosevelt University')
DOCUMENT();
loadMacros(
'PGstandard.pl',
'PGML.pl',
'PGchoicemacros.pl',
'parserRadioButtons.pl',
'PGcourse.pl',
);
TEXT(beginproblem());
$showPartialCorrectAnswers = 0;
#==========================================================
# QUESTION DATA
#==========================================================
# All questions data
@questions_data = (
{
'item_name' => 'Compound name: Alcohol',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Amino',
'Methyl',
],
'correct' => 'Hydroxl',
},
{
'item_name' => '—OH',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Phosphate',
'Methyl',
],
'correct' => 'Hydroxl',
},
{
'item_name' => 'Very common in sugars (e.g., glucose)',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Amino',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Hydroxl',
},
{
'item_name' => 'Glucose and other sugars contain many of these chemical functional groups',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Amino',
'Sulfhydryl',
],
'correct' => 'Hydroxl',
},
{
'item_name' => 'Compound name: Ketone or aldehyde',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Carbonyl',
},
{
'item_name' => '>C=O',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Carboxyl',
'Phosphate',
],
'correct' => 'Carbonyl',
},
{
'item_name' => 'Ketones in sugars (ketoses) and aldehydes (aldoses)',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Amino',
'Sulfhydryl',
],
'correct' => 'Carbonyl',
},
{
'item_name' => 'Compound name: Organic acid, such as acetic acid',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carboxyl',
'Amino',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Carboxyl',
},
{
'item_name' => '—COOH',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Carboxyl',
},
{
'item_name' => '—COO–',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Carboxyl',
},
{
'item_name' => 'The chemical functional group at end of fatty acids',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Carboxyl',
},
{
'item_name' => 'Located at the C-terminus of polypeptide chains',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carboxyl',
'Phosphate',
'Methyl',
],
'correct' => 'Carboxyl',
},
{
'item_name' => 'Responsible for the "acid" part of the term amino acid',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Carboxyl',
},
{
'item_name' => 'Compound name: Amine',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Amino',
'Sulfhydryl',
'Phosphate',
],
'correct' => 'Amino',
},
{
'item_name' => '—NH2',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Amino',
},
{
'item_name' => '—NH3+',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Amino',
'Sulfhydryl',
'Phosphate',
'Methyl',
],
'correct' => 'Amino',
},
{
'item_name' => 'Only one of the seven chemical functional group that can have a positive charge',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carboxyl',
'Amino',
'Phosphate',
],
'correct' => 'Amino',
},
{
'item_name' => 'Located at the N-terminus of polypeptide chains',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Amino',
'Sulfhydryl',
],
'correct' => 'Amino',
},
{
'item_name' => 'Compound name: Thiol',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Amino',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Sulfhydryl',
},
{
'item_name' => 'forming a "cross-link" that helps stabilize protein structure',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Amino',
'Sulfhydryl',
'Phosphate',
],
'correct' => 'Sulfhydryl',
},
{
'item_name' => '—SH',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Sulfhydryl',
'Phosphate',
'Methyl',
],
'correct' => 'Sulfhydryl',
},
{
'item_name' => 'An organophosphorus compound',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Phosphate',
'Methyl',
],
'correct' => 'Phosphate',
},
{
'item_name' => '—PO43–',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carboxyl',
'Amino',
'Phosphate',
'Methyl',
],
'correct' => 'Phosphate',
},
{
'item_name' => '—HPO42–',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carboxyl',
'Amino',
'Phosphate',
'Methyl',
],
'correct' => 'Phosphate',
},
{
'item_name' => '—H2PO4–',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Amino',
'Sulfhydryl',
'Phosphate',
],
'correct' => 'Phosphate',
},
{
'item_name' => 'Found in ATP and DNA',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Amino',
'Phosphate',
'Methyl',
],
'correct' => 'Phosphate',
},
{
'item_name' => 'Involved in energy transfer in molecules like ATP',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carboxyl',
'Amino',
'Sulfhydryl',
'Phosphate',
],
'correct' => 'Phosphate',
},
{
'item_name' => 'Forms the backbone of DNA',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Carboxyl',
'Sulfhydryl',
'Phosphate',
],
'correct' => 'Phosphate',
},
{
'item_name' => 'Compound name: Hydrocarbon',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Amino',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Methyl',
},
{
'item_name' => '—CH3',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Carbonyl',
'Amino',
'Methyl',
],
'correct' => 'Methyl',
},
{
'item_name' => 'Only one of the seven chemical functional group that is hydrophobic',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Hydroxl',
'Amino',
'Sulfhydryl',
'Methyl',
],
'correct' => 'Methyl',
},
{
'item_name' => 'Contributes to the nonpolar nature of fatty acid chains',
'plural_choice' => 'seven biochemical functional groups',
'singular_item' => 'description',
'choices' => [
'Carbonyl',
'Sulfhydryl',
'Phosphate',
'Methyl',
],
'correct' => 'Methyl',
},
);
#==========================================================
# SELECT RANDOM QUESTION
#==========================================================
my $local_random = PGrandom->new();
$local_random->srand($problemSeed);
$question_idx = $local_random->random(0, scalar(@questions_data) - 1, 1);
$q = $questions_data[$question_idx];
$item_name = $q->{'item_name'};
$plural_choice = $q->{'plural_choice'};
$singular_item = $q->{'singular_item'};
@choices = @{ $q->{'choices'} };
$correct = $q->{'correct'};
#==========================================================
# SHUFFLE CHOICES (SEED-STABLE)
#==========================================================
my @choice_indices = (0 .. $#choices);
my @choice_shuffled = ();
while (@choice_indices) {
my $pick = $local_random->random(0, $#choice_indices, 1);
push @choice_shuffled, splice(@choice_indices, $pick, 1);
}
@choices = @choices[@choice_shuffled];
#==========================================================
# BUILD RADIO BUTTONS
#==========================================================
$rb = RadioButtons(
[@choices],
$correct,
labels => 'ABC',
displayLabels => 1,
randomize => 0,
separator => '',
);
#==========================================================
# PGML
#==========================================================
BEGIN_PGML
Which one of the following [$plural_choice]* corresponds to the [$singular_item]* [$item_name]*?
[_]{$rb}
END_PGML
BEGIN_PGML_SOLUTION
The correct answer is: [$correct]*
END_PGML_SOLUTION
ENDDOCUMENT();