Cell Cycle
At the center of the cell cycle control system is Cdk, a protein that

is phosphorylated to become active
is only active during mitosis
manufactures growth factors
binds to different cyclins

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Cell Cycle
The G0 phase is

another name for interphase
a permanent state of all body cells
All of these
the state of most cells in an animal body

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Cell Cycle
Which of the following statements about mitosis is incorrect?

Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers
Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
The daughter nuclei are genetically identical to the parent nucleus

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