Question

Which molecule is a Cdk inhibitor or is controlled by p53?

a) Cyclin-dependent kinase (Cdk)
b) Cyclin
c) p53
d) Rb protein

Answer 1

P21 is a molecule that acts as a Cdk inhibitor and is controlled by p53. It binds to and inhibits the activity of the Cdk/cyclin complexes, preventing the cell cycle from progressing.

Step-by-step explanation:

The molecule that acts as a Cdk inhibitor and is controlled by p53 is p21. P21 is a regulatory protein that is produced in response to elevated levels of p53. It binds to and inhibits the activity of the Cdk/cyclin complexes, preventing the cell cycle from progressing.