Cell Growth Living things grow because they _____ more and more _____.
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Transcript of Cell Growth Living things grow because they _____ more and more _____.
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Cell Growth
Living things grow because they _____
more and more _____
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Reasons to Reproduce
•_____ dead cells•________•Cells too ______
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Why is Size a Prob?•Hard to get
nutrients in•Hard to excrete
waste
3cm
2cm
1cm
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Rates Of Growth•Fast Cells–_____–_____– Hair
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Slow Cells•Brain•______•_______•_______
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Bacteria•Will reproduce within 20 minutes
•How many is that for 1 day if you start with just one?
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Uncontrolled Growth
______
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_______•Tumor- •cells are dysfunctional•not deadly
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Malignant•Deadly•Spreads to other tissues, Called _______
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Causes of Cancer
• _________• Mutagens
• Types: Carcinomas, sarcomas, Lymphomas
Leukemia
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MitosisAnd you…
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Mitosis•Process where nucleus divides into _ nuclei with same # and kinds of __________ as the parent
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Cytokinesis•Process where ______ divides forming two cells
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Chromatin
•Made of -
DNA & _______(uncoiled)
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Chromosome Parts•Chromatids–Coiled DNA
•__________–Middle area
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Cell Cycle
Life cycle of the cell from birth to next generation
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Karyotype
DiploidCells
HaploidCells
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22
__________
• Pairs of chromosomes one from each parent coding for the same gene
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•Interphase•Prophase•Metaphase•Anaphase•Telophase
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InterphasePMAT
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Interphase•Period of Cell ______ G1
•DNA is ______ S•Prepares for split G2
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Animal Cell _______
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Plant Cell Interphase
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IProphaseMAT
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Prophase•Preparation time•_________ Visible•Centrioles opposite end•________ fibers form
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Animal Cell Prophase
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Plant Cell Prophase
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IPMetaphaseAT
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Metaphase•__________ line up and meet in the middle
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Plant Cell
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IPMAnaphaseT
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Anaphase•Chromatids ______ apart
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Plant Cell
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IPMATelophase
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Telophase•Chromatids _______•Nuclear Envelope reforms
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Plant Cell
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Cytokinesis•______ forms•_________ splits•2 cells formed
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CytokinesisFurrow
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Cytokinesis•In _______-–Cytoplasm pinches in two
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Cytokinesis•In Plants-–Cell _____ forms; then the cell wall
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