Enzyme activity in cells is controlled by which of the following?
(I)covalent modifications
(II)modulation of expression levels
(III)feedback inhibition
(IV)allosteric effectors
A)I
B)II
C)III
D)III,IV
E)I,II,III,IV

Question

Quizplus · Accepted Answer

Enzyme activity in cells is regulated through various mechanisms including covalent modifications (such as phosphorylation), modulation of expression levels (which affects the amount of enzyme available), feedback inhibition (where the product of a reaction inhibits the enzyme that produces it), and allosteric effectors (molecules that bind to an enzyme at a site other than the active site, causing a change in its activity).

Enzyme Activity in Cells Is Controlled by Which of the Following