Growth Factors That Are Transported Through the Blood Play What

Multiple Choice

Growth factors that are transported through the blood play what role in the cell cycle?

A) an internal signal that tells the cell to stop dividing and repair its DNA
B) an internal signal that functions as an executioner
C) an internal signal to tell the cell which stage of the cell cycle to enter next
D) an external signal to tell the cell how long it should spend in each phase of the cell cycle
E) an external signal to tell the cell whether or not to divide