12.3 cell cycle control system Flashcards
1
Q
cell cycle regulators
A
signaling molecules in the cytoplasm
-internal external signal/ checkpoints
2
Q
the cell cycle control system
A
a cyclical operating set of molecules in the cell that both triggers and coordinates key events in the cell cycle
3
Q
checkpoints
A
a control point where stop and go ahead signals can regulate the cycle
-make sure things that were supposed to happen happened
4
Q
main checkpoints
A
G1
G2
M
5
Q
G1 checkpoint
A
restriction point in mammals
-if not ok’d then cell goes to G0 phase (non dividing state)
