C-6+Mitosis+

C-6+Mitosis+ - Chapter 6 Lecture Outline Cell Division...

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Cell Division: Mitosis Chapter 6 Lecture Outline
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2 In the Life of an organism– there is the need for Cell Division During embryonic development - mitosis One fertilized egg cell begins to divide Develops into a mature multicellular organism In adults - mitosis To repair damage To replace worn out tissue Growth of organism
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© 2006 W.W. Norton & Company, Inc. DISCOVER BIOLOGY 3/e 3 The life of a cell is divided into Stages of the Cell Cycle
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4 The life of a cell is divided into Stages of the Cell Cycle Before a cell can divide: Key cellular components must be duplicated Proteins, membranes, and organelles G 1 Chromosomes must be duplicated Complete set of genetic information (“S” phase Interphase) Ensures that the new cells can survive Then Mitosis Mitosis can occur
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A time for everything: the cell cycle.
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6 Interphase The period between divisions Longest phase of the cell cycle The cell prepares to divide Divided into 3 phases: G 1 : growth after mitosis S: synthesis of DNA G 2 : growth before mitosis
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7 G 0 Phase Most cells are not actively dividing
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C-6+Mitosis+ - Chapter 6 Lecture Outline Cell Division...

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