Which of the following does not take place during the G1 or G2 phase of the cell cycle?

O The mitochondria grow, expand and divide.

O Energy is utilized.

O DNA is synthesized.

O Proteins are synthesized.

DNA is synthesized.

Explanation:

The cell cycle refers to the series of events that result in the formation of daughter cells from the existing parent cells. It includes the interphase and M phase. The interphase of the cell cycle has three stages: G1, S and G2. The G1 and G2 phases of interphase are marked by growth and normal metabolism.

The G1 phase is followed by the S phase during which the process of DNA replication occurs. The enzymes and other factors become active by the end of the G1 phase and facilitate the synthesis of DNA in the S phase. The cell synthesizes more proteins and prepares itself for cell division during the G2 phase.