Questions: Duplication of organelles and protein synthesis occur during which phase of interphase? G1 G2 S GO

The answer is the first one (G1): Duplication of organelles and protein synthesis occur during the G1 phase of interphase.

Explanation for each option:

• G1: This is the correct answer. During the G1 phase, the cell grows and synthesizes proteins and organelles. It is a period of cellular growth and preparation for DNA replication.

• G2: This phase follows DNA replication (S phase) and is primarily involved in further growth and preparation for mitosis. While some protein synthesis occurs, the main focus is on preparing for cell division.

• S: The S phase is where DNA replication occurs. The primary activity is the synthesis of DNA, not organelles or proteins.

• G0: This is a resting phase where the cell is not actively preparing to divide. Cells in G0 are often in a quiescent state and do not duplicate organelles or synthesize proteins for cell division.

In summary, the G1 phase is where the duplication of organelles and protein synthesis primarily occur during interphase.