Chapter 08 Cell Division and Mitosis

Chapter 08 Cell Division and Mitosis - status in society....

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1 Cell Division and Mitosis
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2 Reproduction A property of life The continuity of life depends upon reproduction Mitosis is the process of reproduction of cells All cells go through a lifetime called the cell cycle
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3 Overview of Division Mechanisms The nucleus of the cell must divide to reproduce the cell Mitosis and meiosis are processes that divide nuclear material Mitosis divides body cells (somatic cells) nuclear material (DNA) Meiosis divides sex cells (germ cells) nuclear material (DNA) sex cells are sperm and eggs
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4 Chromosomes DNA wrapped around protein (called a histone) like a toilet paper roll The center of a chromosome is called the centromere Chromosome number doesn’t relate with
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Unformatted text preview: status in society. More is not always better. Human have 46, gorillas have 48 5 Cell Cycle- A Cells Life Chromosome- a single, long DNA molecule packaged with proteins in a compact shape Cell Cycle: G1, S, G2 called INTERPHASE Mitosis is not part of interphase Average cell life span is 50 divisions 6 Mitosis Four Phases: PROPHASE METAPHASE ANAPHASE TELOPHASE A PRO MET ANA on the TELephone CYTOKINESIS- not part of mitosis Two human cells are created with 46 chromosomes each 7 ALL CELLS DIVIDE except: Nerve Cells Skeletal muscle Mature red blood cells...
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This note was uploaded on 10/05/2011 for the course MCB 2010 taught by Professor Staff during the Spring '11 term at Broward College.

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Chapter 08 Cell Division and Mitosis - status in society....

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