Welcome to the Quiz!
This quiz contains 7 questions from a mix of 1 subtopics.
What is the systematic name of the amino acid drawn above?
2-aminopentanoic acid
2-aminobutanoic acid
2-aminopropanoic acid
2-aminoethanoic acid
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Which of the following functional groups are present in amino acids?
(Select all that apply),
carboxyl group
ester group
amine group
carbonyl group
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What is a zwitterion?
a molecule with an overall charge
a molecule containing only positive charges
a molecule containing both positive and negative charges
a molecule containing only negative charges
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What happens to the amine group in a zwitterion?
it remains neutral as NH2
it loses a proton to become positively charged NH2+
it gains a proton to become positively charged NH3+
it loses a proton to become negatively charged NH2-
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What happens to the carboxyl group in a zwitterion?
it gains a proton to become positively charged COOH+
it loses a proton to become positively charged COO+
it gains a proton to remain neutral as COOH
it loses a proton to become negatively charged COO-
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In the general structure of an α-amino acid, what does the 'R' represent?
the carboxylic acid group
the α-carbon
the amine group
the side chain
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What is the term for molecules that can act as both acids and bases?
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