The Cell Cycle and Mitosis

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What is the cell cycle?

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The cell cycle is the series of events that take place in a cell leading to its division and duplication (replication). It consists of interphase (G1, S, G2) and the mitotic phase (mitosis and cytokinesis).

Front

What are the main stages of mitosis?

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The main stages of mitosis are prophase, metaphase, anaphase, and telophase.

Front

What happens during interphase?

Back

During interphase, the cell grows, duplicates its DNA, and prepares for mitosis. It consists of G1 (cell growth), S (DNA synthesis), and G2 (preparation for mitosis).

Front

What is the role of checkpoints in the cell cycle?

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Checkpoints are control mechanisms in the cell cycle that ensure the proper progression of the cell cycle. They assess whether the cell is ready to proceed to the next stage.

Front

What occurs during the S phase of interphase?

Back

During the S phase, DNA replication occurs, resulting in two identical sets of chromosomes.

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What is cytokinesis?

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Cytokinesis is the process that follows mitosis, where the cytoplasm of a parental cell divides into two daughter cells.

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What is the significance of telophase in mitosis?

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Telophase is the final stage of mitosis where the chromosomes reach the opposite poles, the nuclear membrane re-forms, and the cell prepares to divide.

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What is the difference between mitosis and meiosis?

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Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Front

What is prophase?

Back

Prophase is the first stage of mitosis where chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down.

Front

What happens during metaphase?

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