Regulation of Cell Cycle

AP Biology· difficulty 3/5

Cyclins regulate the cell cycle by

A
$Binding and activating cyclin-dependent kinases (CDKs)$
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B
$Cleaving DNA at origins of replication during S phase$
C
$Triggering glycolysis to provide energy for division$
D
$Synthesizing new membrane lipids for daughter cell formation$

Explanation

Cyclin levels rise and fall throughout the cycle, activating specific CDKs whose substrate phosphorylation drives cell-cycle transitions.

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