Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  2. Chemistry AQA
  3. Question bank

Amino acids, proteins and DNA (A-level only)

EasyMedium
12345678
Question 6

Which statement about enzymes and their interactions is not correct?

The precise three-dimensional shape of an enzyme's active site is determined by its tertiary structure, which is maintained by hydrogen bonds, disulfide bridges, and ionic interactions between amino acid side-chains.

An enzyme will catalyze the hydrolysis of both the L\text{L}L- and D\text{D}D-enantiomers of a chiral dipeptide at identical rates because the covalent amide linkage being cleaved is planar and achiral.

A competitive inhibitor drug acts by binding to the active site of an enzyme, blocking the substrate from entering, and its design can be optimized using computer-aided molecular modeling.

Enzymes are highly stereospecific catalysts because they are constructed from chiral L\text{L}L-amino acids, resulting in an asymmetric active site.

Amino acids, proteins and DNA (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Amino acids, proteins and DNA (A-level only)