Question

A Cdk depends on a regulatory subunit called a _________ to be enzymatically active and to be targeted to its proper substrate.

a. Cyclin
b. Tubulin subunit
c. Kinesin
d. Dynein
e. Plectin

Answer 1

A Cdk depends on a cyclin to be enzymatically active and targeted to its proper substrate. Cyclins regulate the cell cycle by binding to Cdks and together they phosphorylate other proteins to advance the cell cycle.

Step-by-step explanation:

A Cdk depends on a regulatory subunit called a cyclin to be enzymatically active and to be targeted to its proper substrate. Cyclins regulate the cell cycle when they are bound to Cdks.

The Cdk/cyclin complex must also be phosphorylated to become fully active. Cdks are enzymes that phosphorylate other proteins, activating them and advancing the cell to the next phase of the cell cycle.