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Multiple Choice
Which of the following describes cell activity during the G1 phase of the cell cycle?
A
Chromosome segregation and cell division
B
Cell cycle arrest and repair
C
DNA replication and synthesis
D
Cell growth and preparation for DNA replication
Verified step by step guidance
1
Understand the cell cycle: The cell cycle consists of several phases, including G1, S, G2, and M. Each phase has distinct activities and functions.
Focus on the G1 phase: The G1 phase is the first stage after cell division. It is primarily concerned with cell growth and preparation for the next phase, which is DNA replication.
Identify activities in the G1 phase: During the G1 phase, the cell increases in size, produces RNA, and synthesizes proteins necessary for DNA replication. This phase is crucial for ensuring the cell is ready for the S phase.
Differentiate from other phases: Chromosome segregation and cell division occur during the M phase, while DNA replication and synthesis occur during the S phase. Cell cycle arrest and repair can happen if there are issues detected, but they are not typical activities of the G1 phase.
Conclude the correct description: Based on the understanding of the G1 phase, the correct description of cell activity during this phase is cell growth and preparation for DNA replication.