To control the cell cycle,

A) the activity of Cdks stays the same throughout the cell cycle.
B) cyclins fluctuate during the cell cycle.
C) Cdks are active only when they are released from cyclins.
D) the anaphase-promoting complex stimulates DNA replication.
E) M-Cdk inhibits mitosis.

Cyclins

Regulatory proteins whose levels oscillate during the cell cycle; cyclins associate with cyclin-dependent kinases to form cyclin-Cdk complexes.

Cdks

Cyclin-dependent kinases, enzymes that regulate the cell cycle through phosphorylation of target proteins.

Anaphase-Promoting Complex

A multiprotein complex that regulates the progression of the cell cycle by triggering the transition from metaphase to anaphase in mitosis and meiosis.