Multiple Choice
In a typical proliferating eukaryotic cell, which phase is generally the longest portion of the cell cycle?
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16. Cell Division
Overview of the Cell Cycle
Multiple Choice
During the G0 phase of the cell cycle, which of the following best describes what happens to a cell?
A
The cell replicates its DNA to prepare for mitosis.
B
The cell separates its sister chromatids and divides its nucleus.
C
The cell grows and synthesizes organelles as part of the primary growth phase before DNA replication.
D
The cell exits the active cell cycle and remains metabolically active but is not preparing to divide unless it re-enters the cycle in response to signals.
Verified step by step guidance1
Understand the context of the G0 phase within the cell cycle: it is a phase where cells exit the active cycle and do not proceed to DNA replication or division.
Recall that during the G1 phase, cells grow and synthesize organelles in preparation for DNA replication, which is not the case in G0.
Recognize that DNA replication occurs during the S phase, so any option mentioning DNA replication during G0 is incorrect.
Note that mitosis involves separation of sister chromatids and nuclear division, which happens after DNA replication, not in G0.
Conclude that in G0, the cell remains metabolically active but does not prepare for division unless it receives specific signals to re-enter the cell cycle.
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