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The Cell Cycle is regulated by both external and internal factors.
Part A: List two external factors that influence the cell cycle and briefly describe them. (2 points)
Part B: List two internal factors that influence the cell cycle and briefly describe them. (2 points)

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maisyurbano05

Answer:

External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells. Two of the most important internal factors are kinases and cyclins.

         

49986961

Answer:

A. External factors

Physical signals: When cell 1 physically contacts cell 2, cell division comes to a halt

Chemical signals: Proteins that initiate cell division

B. Internal factors

Regulation that occurs within the cell, aided by regulatory molecules such as enzymes and proteins found in the cytoplasm. The enzymes and proteins assist in the cell's locomotion.

Explanation:

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