Question

The phase of interphase when the cell synthesizes its structural proteins and enzymes ____________.

a) G1 phase
b) S phase
c) G2 phase
d) M phase
e) G0 phase

Answer 1

The phase of interphase when the cell synthesizes its structural proteins and enzymes is the G1 phase. This phase, which is marked by cell growth, prepares the cell for DNA replication. The correct answer is (a) G1 phase.

Step-by-step explanation:

The phase of interphase during which the cell synthesizes its structural proteins and enzymes is known as the G1 phase. This is a period of cell growth where the cell is actively producing proteins and increasing in size. The G1 phase prepares the cell for the subsequent phase of DNA replication, referred to as the S phase. It is the first gap or growth phase in the cell cycle where biosynthetic and metabolic activities occur at a high rate.

If a cell is not dividing, it may enter a state referred to as the G0 phase, which is a resting phase outside of the cell cycle. The correct option for the question is (a) G1 phase, as this is the phase in which the cell is focused on growth and synthesis of proteins needed for various cellular functions, including DNA replication.