AQA · Biology · 8461
GCSE Biology: Mitosis and the cell cycle
Cell biology · AQA GCSE Biology (8461), specification point 4.1.2.2. Cards are generated from the exam board's own specification for "Mitosis and the cell cycle", and every card links back to the page it came from. Specification © AQA — used with attribution.
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What is the name of the series of stages by which cells divide?
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The cell cycle.
Name two sub-cellular structures a cell must increase in number before dividing.
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Ribosomes and mitochondria.
What happens to the DNA before a cell divides?
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It replicates, forming two copies of each chromosome.
What happens to the chromosomes during mitosis?
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One set of chromosomes is pulled to each end of the cell, and then the nucleus divides.
What is the final stage of the cell cycle after the nucleus divides?
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The cytoplasm and cell membranes divide to form two identical cells.
What are the three overall stages of the cell cycle?
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1. Cell growth and DNA replication; 2. Mitosis (nucleus divides); 3. Division of cytoplasm and cell membranes.
Why is mitosis important in multicellular organisms?
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It produces new identical cells for growth and development.
How many cells are produced when one cell completes the cell cycle?
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Two genetically identical cells.
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