In eukaryotic cells, the timing of the cell cycle is regulated by

A) centrioles.
B) cyclins.
C) spindle fibers.
D) the nuclear envelope.


Ans: B) cyclins.

Biology & Microbiology

You might also like to view...

Refer to Figure 40-1. Which of the following structures is the source of sebum, a substance that inhibits bacterial growth on the surface of the skin?


a. 5
b. 7
c. 10
d. 11
e. 12.

Biology & Microbiology

What is the difference between a totipotent stem cell and a pluripotent stem cell? What piece of evidence would you

need to distinguish them? What will be an ideal response?

Biology & Microbiology

The primary component of the plasma membrane is:

A) carbohydrate. B) cholesterol. C) phospholipid. D) protein.

Biology & Microbiology

A water strider walks across a pond on________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology