zzch. 10
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| mitosis | the first stage of cell division which occurs in the cell nucleus
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| cytokinesis | the second stage, division of the cytoplasm
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| mitosis is A-sexual because | The cells produced by mitosis are genetically identical to the parent cell
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| chromosome | thread like structure with in the nucleus containing the genetetic information that is passed from one generation to the next
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| chromatid | one of two identical sister parts of a duplicated chromosome
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| Three phases of interphase | G1 phase, S phase, G2 phase
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| G1 Phase | period of activity in which cells do most of their growing, during this phase cells increase in size and synthesize most of their organelles
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| S Phase | Follows G1 phase, chromosomes are replicated and the synthesis DNA molecules take place. Key proteins associated with the proteins are also synthesized
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| G2 | Follows the S phase, organelles and molecules required for cell division are produced
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| M Phase | Prophase, metaphase, anaphase, telephase
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| Prophase | The condensed chromosomes become attached to fibers in the spindle at a point near the centromere of each chromatid.
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| At the end of prophase there is... | no nucleolus and nuclear envelope breaks down
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| Metaphase | Chromosomes line up across the center of the cell. Microtubules connect the centromere of each centromere to the 2 poles of the spindle
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| Anaphase | Centromeres divide, chromatids separate and move to opposite poles of the spindle and become individual chromosomes
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| When is anaphase over | when the chromosomes stop moving
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| Telophase | nuclear membrane forms around each group of chromosomes. Chromosomes unwinds. Cytokinesis begins.
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| Cytokinesis | The process in which the cytoplasm divides, and one cell becomes two individual cells
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| Cytokinesis in animals | Cell pinches inward and cleavage is formed
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| Cyclins | Regulate the timing of the cell cycle in eukaryotic cells
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| Two types of regulatory proteins | Internal regulator and External regulator
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| Internal Regulators | Proteins that are inside the cell
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| External Regulators | Direct cells to speed up or slow down the cell cycle
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| During which phase do chromosomes become visible | prophase
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| Formula for determining the surface area of something is... | length X width X # of sides
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| Formula for determining the volume of something is... | length X width X height
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| Formula for determining the ratio of surface area to volume is... | surface area/volume
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Created by:
Kako
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