Multiple Choice
Which of the following is NOT a function of S-Cdks?
16. Cell Division
G1 Phase
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Which of the following statements best describes what happens during the G1 phase of the cell cycle?
A
The cell grows and carries out normal metabolic functions while preparing for DNA replication.
B
The cell divides its cytoplasm and organelles to form two daughter cells.
C
The cell replicates its DNA to produce two identical sets of chromosomes.
D
The cell condenses its chromosomes and aligns them at the metaphase plate.
Verified step by step guidance1
Understand the cell cycle phases: The cell cycle consists of interphase (G1, S, and G2 phases) and the mitotic phase (M phase). Each phase has specific functions and events.
Focus on the G1 phase: The G1 phase is the first phase of interphase. During this phase, the cell grows in size, synthesizes proteins, and carries out normal metabolic activities. It also prepares for DNA replication by producing necessary enzymes and molecules.
Eliminate incorrect options: The statement 'The cell divides its cytoplasm and organelles to form two daughter cells' describes cytokinesis, which occurs during the M phase, not G1. The statement 'The cell replicates its DNA to produce two identical sets of chromosomes' describes the S phase, not G1. The statement 'The cell condenses its chromosomes and aligns them at the metaphase plate' describes metaphase, which is part of the M phase.
Identify the correct description: The correct statement for the G1 phase is 'The cell grows and carries out normal metabolic functions while preparing for DNA replication.' This aligns with the known functions of the G1 phase.
Conclude the reasoning: Based on the understanding of the cell cycle and the elimination of incorrect options, the correct description of the G1 phase is the one that highlights cell growth, metabolic activity, and preparation for DNA replication.
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