Mitosis160-page5

Mitosis160-page5 - DNA Duplication (S) DNA duplication (or...

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Cell Reproduction: Mitosis - 5 The Cell Cycle Mitosis is a part of the cell cycle. The cell cycle starts when a cell is formed and continues until it divides (or dies). Some cells never divide; others are specialized for division (especially in plants, where virtually all cell division occurs in specialized tissue called meristem). Cell division is a brief part of the life cycle; most of the life of a cell is spent in normal activities of growth and maintenance. The cell cycle involves the following: Interphase Interphase is the period of time for normal cell activities, including: Growth (G 1 or Gap) The newly formed cell does its normal activities.
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Unformatted text preview: DNA Duplication (S) DNA duplication (or synthesis) occurs. Once started, DNA duplication cannot be reversed; the cell is committed to divide. Preparation for Division (G 2 ) Proteins needed to do cell division are manufactured in preparation for mitosis and cytokinesis. Cells can continue to grow and do their normal cell activities as well. A G 2 checkpoint controls whether or not the cell will go into mitosis. Note: If a cell never divides, it stays in G 1 permanently a state called G (or non-dividing state)....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.

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