AP Biologymediummcq1 pt
Which interaction stabilizes protein tertiary structure?
A.Disulfide bridges between cysteine R groups
B.Glycosidic bonds
C.Phosphodiester bonds
D.Ester bonds to glycerol
Explanation
Core Concept
Covalent S–S bonds lock distant parts of the chain together. Hydrophobic packing, hydrogen bonds, and ionic interactions also contribute, but disulfide bridges are the covalent anchor.
Correct Answer
ADisulfide bridges between cysteine R groups
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 →