Question 4#

The cell cycle includes all of the following phases EXCEPT:

a. S phase
b. G1 phase
c. G2 phase
d. G3 phase

Correct Answer is D


The cell cycle is divided into four phases. During the synthetic or S phase, the cell generates a single copy of its genetic material, whereas in the mitotic or M phase, the cellular components are partitioned between two daughter cells. The G 1 and G2 phases represent gap phases during which the cells prepare themselves for completion of the S and M phases, respectively. When cells cease proliferation, they exit the cell cycle and enter the quiescent state referred to as G.