Answer:
it controls the heartbeat and movement of food
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Explanation:
C:Primary cause i was asked this question and that is what the answer was
Cyclin-dependent kinases (Cdks), along with cyclins, are major control switches at these checkpoints. They are central to cell cycle control; their activation via cyclin mediates progression through all four phases of the cell cycle. p53 is a protein that functions to block the cell cycle if the DNA is damaged
There is an enzyme called polymerase.
