Multiple Choice
Which of the following is not a phase of the cell cycle?
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11. Cell Division
Introduction to the Cell Cycle
Multiple Choice
During which phase of the cell cycle do chromosomes become visible as distinct structures?
A
Metaphase
B
Telophase
C
Prophase
D
Anaphase
Verified step by step guidance1
Understand the cell cycle phases: The cell cycle consists of interphase (G1, S, G2) and mitotic phase (M phase). The M phase includes prophase, metaphase, anaphase, and telophase.
Focus on prophase: During prophase, the chromatin condenses into visible chromosomes. This is the first stage of mitosis where chromosomes become distinct structures.
Compare with other phases: In metaphase, chromosomes align at the cell's equatorial plane. In anaphase, sister chromatids separate and move to opposite poles. In telophase, chromosomes de-condense back into chromatin.
Visualize the process: Chromosomes are initially not visible as distinct entities during interphase. They become visible during prophase as the nuclear envelope breaks down and spindle fibers form.
Conclude with prophase: Recognize that prophase is the phase where chromosomes first become visible as distinct structures, setting the stage for subsequent mitotic events.
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