Multiple Choice
What is the primary purpose of the S phase during interphase in the cell cycle?
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11. Cell Division
Interphase
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Which of the following best describes how interphase prepares a cell for mitosis?
A
By condensing chromosomes and aligning them at the metaphase plate
B
By dividing the cytoplasm and separating sister chromatids
C
By replicating the DNA and increasing the cell's size and organelle number
D
By breaking down the nuclear envelope and forming spindle fibers
Verified step by step guidance1
Understand the context of the question: Interphase is a phase of the cell cycle that occurs before mitosis. It is crucial for preparing the cell for division by ensuring it has the necessary components and information to divide successfully.
Recall the key events of interphase: Interphase consists of three sub-phases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2). Each sub-phase has specific roles in preparing the cell for mitosis.
In the G1 phase, the cell grows in size, produces proteins, and synthesizes organelles to ensure it has enough resources for division.
In the S phase, the cell replicates its DNA, ensuring that each daughter cell will receive an identical copy of the genetic material during mitosis.
In the G2 phase, the cell continues to grow, checks for DNA replication errors, and begins producing components like spindle fibers that will be used during mitosis.
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