Unit 3 Review - Cell Cycle

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What is the cell cycle?

Back

The cell cycle is the series of phases that a cell goes through from its formation to its division into two daughter cells. It includes interphase and the mitotic phase.

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What are the main stages of the cell cycle?

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The main stages of the cell cycle are Interphase (G1, S, G2) and the Mitotic phase (Mitosis and Cytokinesis).

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What happens during Interphase?

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During Interphase, the cell grows, duplicates its DNA, and prepares for mitosis. It consists of three sub-phases: G1 (cell growth), S (DNA synthesis), and G2 (preparation for mitosis).

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What is Mitosis?

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Mitosis is the process of cell division where one cell divides to produce two genetically identical daughter cells. It consists of several phases: prophase, metaphase, anaphase, and telophase.

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What occurs during Prophase?

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During Prophase, the chromatin condenses into visible chromosomes, the nuclear membrane begins to break down, and the mitotic spindle starts to form.

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What occurs during Metaphase?

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During Metaphase, chromosomes align at the cell's equatorial plane, and spindle fibers attach to the centromeres of the chromosomes.

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What occurs during Anaphase?

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During Anaphase, the centrioles pull the sister chromatids apart towards opposite poles of the cell.

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What occurs during Telophase?

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During Telophase, the chromosomes reach the poles, the nuclear membrane re-forms around each set of chromosomes, and the chromosomes begin to de-condense.

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What is Cytokinesis?

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Cytokinesis is the final stage of the cell cycle where the cytoplasm divides, resulting in two separate daughter cells.

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What is the significance of the G1 phase?

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The G1 phase is significant because it is the first stage of interphase where the cell grows and prepares for DNA replication.