The Cell Cycle

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Last updated 12:31 PM on 2/2/25
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8 Terms

1
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Gap 1

The cell

  1. The cell checks to see that the DNA is undamaged

  2. Grows'

  3. Carries out normal functions

  4. prepares to replicate DNA

  5. Some cells eg Nerve and muscle cells exit at this point to not divide again.

<p>The cell</p><ol><li><p>The cell checks to see that the DNA is undamaged</p></li><li><p>Grows'</p></li><li><p>Carries out normal functions</p></li><li><p>prepares to replicate DNA</p></li><li><p>Some cells eg Nerve and muscle cells exit at this point to not divide again.</p></li></ol><p></p>
2
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Synthesis

DNA replication
The cell checks to see that the DNA is replicating correctly.

<p>DNA replication<br>The cell checks to see that the DNA is replicating correctly. </p>
3
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Gap 2

The cell

  1. Checks that all DNA has been replicated

  2. Prepares for division of its nucleus

  3. A protein that makes microtubules is synthesized

  4. Cell takes inventory

<p>The cell</p><ol><li><p>Checks that all DNA has been replicated</p></li><li><p>Prepares for division of its nucleus</p></li><li><p>A protein that makes microtubules is synthesized</p></li><li><p>Cell takes inventory </p></li></ol><p></p>
4
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Prophase

  • Nuclear membrane disintegrates

  • Nucleolus disappears

  • Chromatin condenses into chromosomes and become visible

  • Spindle apparatus begins to form at the poles

<ul><li><p>Nuclear membrane disintegrates</p></li><li><p>Nucleolus disappears</p></li><li><p>Chromatin condenses into chromosomes and become visible</p></li><li><p>Spindle apparatus begins to form at the poles</p></li></ul><p></p>
5
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Metaphase

Chromosomes attach to the spindle apparatus and align along the center of the cell.

<p>Chromosomes attach to the spindle apparatus and align along the center of the cell.</p>
6
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Anaphase

Microtubules of the spindle fibers shorten moving chromosomes to opposite poles.

<p>Microtubules of the spindle fibers shorten moving chromosomes to opposite poles.</p>
7
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Telophase

  • Chromosomes reach poles of cell

  • Nuclear envelope reforms

  • Nucleolus reappears

  • Chromosomes decondense

<ul><li><p>Chromosomes reach poles of cell</p></li><li><p>Nuclear envelope reforms</p></li><li><p>Nucleolus reappears</p></li><li><p>Chromosomes decondense</p></li></ul><p></p>
8
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Cytokinesis

Plant cell: Cell plate forms dividing daughter cells
Animal cells; Cleavage furrow forms at equator of cell and pinches inward until cell divides in two.

<p><strong>Plant cell</strong>: Cell plate forms dividing daughter cells<br><strong>Animal cells</strong>; Cleavage furrow forms at equator of cell and pinches inward until cell divides in two.</p>