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9 Cards in this Set
- Front
- Back
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Stages in the cell cycle (outline)
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New cells are produced by division of existing cells. Interphase (G1, S, G2), mitosis and cytokinesis. Produces two genetically identical cells that then undergo interphase
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Interphase (outline)
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Interphase is an active and longest period in the life of a cell when many metabolic reactions occur: increase in no. of mitochondria/chloroplasts
G1 - Period of growth, DNA transcription and protein synthesis S: DNA replication period G2 : The cell prepares for division |
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Prophase (mitosis)
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Spindle microtubules grow and extend from each pole to the equator while chromosomes become shorter and fatter (supercoiling). Each chromosome consists of two identical chromatids formed by DNA replication and held together by a centromere
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Metaphase (mitosis)
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Spindle microtubules attach to centromeres
Nuclear membrane breaks down while chromosomes move to the equator |
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Anaphase (mitosis)
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Centromeres split and chromatids become chromosomes.
Sister chromosomes pulled to opposite poles |
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Telophase (mitosis)
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Nuclear membranes form around chromosomes at the poles, spindle microtubules break down. Chromosomes uncoil and are no longer visible, the cell undergoes cytokinesis
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Cytokinesis (cell cycle) (outline)
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The process of dividing the cytoplasm to form two cells with genetically identical nuclei.
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Tumours (state)
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Tumours are the result of uncontrolled cell division and that these can occur in any organ or tissue.
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Functions involved in mitosis (state)
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Growth, embryonic development, tissue repair and asexual reproduction involve mitosis.
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