Many of the specific functions that are triggered when a cell passes one of the cell cycle checkpoints result from activation of enzymes and other proteins. A common mechanism for this activation is:

A. phosphorylation of specific proteins.
B. signal transduction.
C. polymerization of tubulin.
D. ATP synthesis.


A

Biology & Microbiology

You might also like to view...

The strand of DNA for a particular gene that is copied by the RNA polymerase to form mRNA is called the ________ strand.

A. copy B. transcription C. template D. leading

Biology & Microbiology

Some sponges are vital in recycling what particular nutrient back into the marine environment?

a. Calcium b. Silica c. Nitrogen d. Potassium

Biology & Microbiology

Select all correct descriptions of changes that occur to the circulatory system of a pregnant woman.

e. increased renin-angiotensin-aldosterone activity d. relaxation of the smooth muscle in arteries c. increased blood volume d. All of the above

Biology & Microbiology

In most prokaryotes, DNA replication proceeds

a. without an RNA primer. b. 3? to 5?. c. using only a single strand as a template. d. bidirectionally.

Biology & Microbiology