Which of the following statements about cyclin-dependent kinases (Cdk's) or cyclin is false?
A) Different Cdk's act at different points in the cell cycle.
B) A Cdk can catalyze the phosphorylation of retinoblastoma protein.
C) Phosphorylated retinoblastoma protein is inactive.
D) Cdk's use ATP as a substrate.
E) Cyclin is made continuously during the cell cycle.

Question

Quizplus · Accepted Answer

Cyclin is not made continuously during the cell cycle. Its level peaks at specific points in the cycle and then declines quickly afterwards.

Which of the Following Statements About Cyclin-Dependent Kinases (Cdk's) or Cyclin