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22 Cards in this Set
- Front
- Back
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Why doesn't a prokaryotic cell undergo a complete mitosis?
What is its division based off of? |
It does not have a nucleus
Its size |
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What do eukaryotic cells require in order to undergo successful division?
(4 things) |
Good resources in order to grow
The ability to copy DNA A way to move the DNA (in spindles) Chemical controls |
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After the cell cycle is complete, what's special about both the cells?
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They are identical
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What is interphase the time between?
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The tune between each mitosis
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What are chromosomes for?
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To protect the DNA in its condensed form
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What happens during prophase?
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Nucleus disappears and DNA condenses
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What happens during metaphase?
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The chromosomes line up in the middle
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What happens during anaphase?
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The chromosomes are pulled to different sides by the spindle
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What happens during telophase?
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The spindles detach and the membrane starts to form around each cell
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When is DNA most fully condensed and visible with a light microscope
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During metaphase
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What is each DNA strand based off of?
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An old DNA strand
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DNA is most easily broken apart where....?
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Hydrogen bonds hold the complimentary bases together
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Mitosis is necessary because...?
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It preserves the genetic "message" of a cell
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What is the origin of the mitotic spindle?
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Cytoskeleton
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Phases of mitosis are?
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Prophase, metaphase, anaphase, and telophase
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What controls the progress of the cell cycle?
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Cyclin-dependent kinases
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What is the purpose of each of the checkpoints in the cell cycle?
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Checks the amounts of cyclin and kinases to know whether the cell is ready to proceed to the next step
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Why is p53 good?
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It determines whether or not the cell is ready to proceed with cell division
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What causes cancer?
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p53 that is malfunctioning is unable to determine whether the cell has copied DNA correctly
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What happens during G1?
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The cell continues on its daily routine and job
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What happens during G2?
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The cell begins to bulk up
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What happens during S?
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The cell copies its DNA
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