AP Biologymediummcq1 pt
Which functional group is found in every amino acid?
A.An alpha-amino functional group and an alpha-carboxyl functional group
B.Sulfhydryl (–SH) only
C.Phosphate (–PO₄)
D.Carbonyl (C=O) only
Explanation
Core Concept
All standard amino acids contain an alpha carbon bonded to a carboxyl functional group and to a nitrogen-containing alpha-amino functional group, along with a hydrogen and a variable side chain. Proline is an important wording exception to the simple –NH2 drawing because its alpha nitrogen is part of a ring and is secondary.
Correct Answer
AAn alpha-amino functional group and an alpha-carboxyl functional group
More Unit 1: Chemistry of Life practice questions
- easyAn enzyme's function is destroyed by extreme pH. The most direct explanation is that
- easyWhat is the monomer of proteins?
- mediumBoth starch and glycogen are glucose polymers used for storage. Their structural difference is that
- easyIf a solution of a biomolecule turns a pH indicator acidic, which group is most likely present?
- easySulfur is most notably found in which biomolecules?
Practice more AP Biology questions with full explanations
Practice Unit 1: Chemistry of Life Questions →