Phosphorylation that changes an enzyme's activity is an example of ________.
A)covalent modification
B)allosteric regulation
C)sequential modification
D)site-directed mutagenesis

Question

Quizplus · Accepted Answer

Phosphorylation is a type of covalent modification that can change an enzyme's activity by adding a phosphate group to the enzyme, which can activate or deactivate it.

B, C and D are incorrect because:
B) Allosteric regulation is a type of enzyme regulation where a molecule binds to a specific site on the enzyme, which causes a conformational change that affects the enzyme's activity.
C) Sequential modification refers to the sequential addition or removal of chemical groups by enzymes along a metabolic pathway, which can modify the activity of the enzyme or intermediate compounds.
D) Site-directed mutagenesis is a technique used to introduce specific mutations into the DNA sequence of a gene, which can change the amino acid sequence of the protein and potentially affect its activity.

Phosphorylation That Changes an Enzyme's Activity Is an Example of ________