Question

What is the role of the proteins known as cyclins?

A). to separate sister chromatids during cell division
B). To replicate DNA
C). To pinch the cytoplasm into two parts
D). To regulate the timing of the cell cycle

Answer 1

cyclin is your keyword to "cycle"

Answer 2

go ahead and read more about mitosis. :)

Answer 3

Pretty sure it's D :D

Answer 4

Cyclins activates Cdk enzymes which regulate cell cycle

Answer 5

Thanks! :D