Chapter 8: Mitosis - Cell Division and Reproduction
Chapter 8: Mitosis - Cell Division and Reproduction
Chapter 8: Mitosis - Cell Division and Reproduction
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The Life Cycle of a Eucaryotic <strong>Cell</strong>:<br />
Interphase: Time between cell divisions.<br />
Most cells spend about 90% of their time in interphase.<br />
<strong>Cell</strong>s actively synthesize materials they need to grow.<br />
Chromosomes are duplicated.<br />
Interphase can be divided into three stages:<br />
1. G 1 phase: Just after cell division.<br />
<strong>Cell</strong> grows in size, increases number of organelles, <strong>and</strong><br />
makes proteins needed for DNA synthesis.<br />
2. S phase: DNA replication.<br />
Single chromosomes are duplicated so they contain two<br />
sister chromatids.<br />
3. G 2 phase: Just before cell division.<br />
Protein synthesis increases in preparation for cell division.
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