Multiple Choice
How does a cell typically know when to divide?
A) Cells have an internal clock and divide only when they reach a certain age.
B) Tumor suppressor genes code for growth factor proteins that initiate cell division.
C) Proto-oncogenes code for growth factor proteins that initiate cell division.
D) Oncogenes code for growth factor proteins that initiate cell division.
Correct Answer:

Verified
Correct Answer:
Verified
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