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CellRepro_9&10

CellRepro_9&10 - Cell reproduction Chapter 9 10...

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Cell reproduction Chapter 8 Chapter 9 & 10
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Reproduction D= the creation of new individuals Organism reproduction & inheritance Cell reproduction Cell division Replication vs division
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Types of Reproduction Asexual No exchange of genetic material Binary fission ex Bacteria Cloning ex sea anenome Mitosis Sexual Exchange of genetic material Gametes Meiosis
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Binary Fission Asexual Reproduction used by Prokaryotes
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Cell division
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Cell Theory All known living things are made up of cells The cell is the structural and functional unit of all living things All cells come from pre-existing cells by division Cells contain hereditary information which is passed from cell to cell during cell division All cells are basically the same in chemical composition All energy flow (metabolism & biochemistry) of life occurs within cells
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Cell Division Replication or creation of new individual cells Function Growth Repair Maintenance Asynchrony
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Cell Cycle Life of a cell Divided into ordered phases based on functions Cell cycle phases (3) Interphase (3) Normal activities Replication Mitotic phase (4) Division Cytokinesis (1)
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Cell cycle
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Cell cycle Regulation
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Apoptosis Programmed cell death Growth & development Protection
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Interphase 90 % of cell’s life Normal functions & DNA replication
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DNA Duplication Copying of genetic sequence Occurs when in chromatin form Terminology Chromatin Sister Chromatid Chromosome Daughter cells
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Existing strand 2 strands
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Chromatin Combination of unwound DNA strands and proteins (Histones) Normal condition (interphase) Replication occurs in this stage Not visible w/ naked eye
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Chromatin
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Chromatin is like Spaghetti…What???
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