Cyclins modulate the progression of cells through the cell cycle by directly
A)activating G proteins. B)phosphorylating growth factor receptors. C)activating protein kinases that are critical regulators of cell division. D)degrading histones. E)turning on genes necessary for DNA replication.
The generation time for a particular cell type is the time it takes a cell to
A)grow to twice its original size. B)replicate DNA during S phase. C)progress through M phase. D)progress through a complete cell cycle. E)transition from G0 to G1.