Question

the diagram shows the major stages of the cell cycle and the percentage of time spent in each stage.

percentage of time in
each major stage of the cell cycle

which statement best explains why a cell spends the majority of its time in interphase?
a. the cell is growing and carrying out processes such as metabolism and dna replication
b. the cell is dying and chromosomes are condensing to lysosomes clear dead cell matter away
c. the cell needs time to synthesize spindle fibers to complete mitosis.
d. the cell needs time to complete cytokinesis.

Explanation:

To determine why a cell spends most time in interphase, we analyze each option:

• Option A: Interphase (G₁, S, G₂) is when the cell grows, performs metabolism, and replicates DNA (S phase) to prepare for division. This matches the purpose of interphase.
• Option B: Apoptosis (cell death) and autophagy (digesting dead matter) are not main activities of interphase. Interphase is for preparation for division, not cell death - related processes.
• Option C: Moving organelles and spindle fibers occur in mitosis (M phase), not interphase. Interphase is about growth and replication, not mitotic - related movements.
• Option D: Protein synthesis happens in interphase (especially G₁ and G₂), but the option's description is too vague and does not capture the main purpose of interphase (preparation for division via growth, metabolism, and DNA replication) as well as Option A.

Answer:

A. The cell is growing and carrying out processes such as metabolism and DNA replication