1Unit+C+-+Mitosis+Meiosis.ppt - Mitosis Remember Cell Theory Cell is the smallest unit of life All living things are formed from preexisting cells by

1Unit+C+-+Mitosis+Meiosis.ppt - Mitosis Remember Cell...

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Mitosis
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Remember Cell Theory Cell is the smallest unit of life All living things are formed from pre- existing cells by cell division All living things are made up of one or more cells
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Asexual Reproduction: Mitosis
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Binary Fission Cell division done by bacteria (prokaryotes) Asexual reproduction where one cell (mother cell) divides into two equal cells (daughter cells)
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Mitosis Process of cell division where a single Mother cell becomes two identical daughter cells.
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What process occurs when you scrape your knee or hand to replace the lost skin cells?
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Mitosis Daughter cells must be identical to the mother to perform the same functions Daughter cell will grow and become mother cells
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CELL CYCLE
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Cell Cycle
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Goal of the cell cycle is to create a new daughter cell exactly like the mother
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Cell Cycle Exception to the goal
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G 0 PHASE “gap 0” Phase times when a cell will leave the cycle and quit dividing This may be a temporary resting period or more permanent (i.e. nerve cells)
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INTERPHASE Time between cell divisions, not counted as part of mitosis Cell growth, repair, and basic functions occur
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Cell Cycle
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G 1 PHASE “gap 1” Phase period when cell growth and development occur
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S PHASE “synthesis” Phase DNA replication / synthesis occurs
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G 2 PHASE “gap 2” Phase when organelles needed in cell division are made
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Mitosis Vocabulary
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structure that contains genetic information (usually visible only in mitosis) Chromosome
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The set of 46 human chromosomes After “S” phase of cell cycle
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