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Multiple Choice
Which of the following best describes what occurs during the G1 phase of interphase in the cell cycle?
A
The cell divides its cytoplasm to form two daughter cells.
B
The cell condenses its chromosomes and begins mitosis.
C
The cell grows and carries out normal metabolic functions, but does not replicate its DNA.
D
The cell replicates its DNA in preparation for cell division.
Verified step by step guidance
1
Understand the cell cycle: The cell cycle consists of interphase (G1, S, and G2 phases) and the mitotic phase (M phase). Interphase is the period when the cell prepares for division, and G1 is the first phase of interphase.
Clarify the role of the G1 phase: During the G1 phase, the cell grows in size, produces organelles, and carries out normal metabolic functions. DNA replication does not occur in this phase; it happens later in the S phase.
Differentiate G1 from other phases: The S phase is when DNA replication occurs, and the G2 phase is when the cell prepares for mitosis. The mitotic phase (M phase) involves chromosome condensation and cell division.
Eliminate incorrect options: The cell does not divide its cytoplasm during G1 (this happens during cytokinesis in the M phase). Chromosome condensation and mitosis do not occur in G1 either; these are part of the M phase.
Select the correct description: The best description of the G1 phase is that the cell grows and carries out normal metabolic functions, but does not replicate its DNA.