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Cell Reproduction. Cells Your body is made of between 10 to 100 trillion cells About one thousandth of them die every day.

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Presentation on theme: "Cell Reproduction. Cells Your body is made of between 10 to 100 trillion cells About one thousandth of them die every day."— Presentation transcript:

1 Cell Reproduction

2 Cells Your body is made of between 10 to 100 trillion cells About one thousandth of them die every day.

3 Where do new cells come from? Cells are made by a process called mitosis. Cells reproduce by making exact copies of themselves to replace the dead cell.

4 Cell Cycle

5 Mitosis Interphase Prophase Metaphase Anaphase Telophase

6 Interphase Period of growth & development Hereditary information (DNA) copied (replicated / duplicated)

7 Prophase DNA begins to shorten & thicken – Now called chromatids / chromosomes Centromeres form Nuclear membrane breaks apart Spindle fibers form

8 Metaphase Chromatids / chromosomes line up Centromere attaches to spindle fibers

9 Anaphase Centromeres divide Spindle fibers shorten Chromatid pairs separate move to ends of cell Chromatids are now called – Each ½ of the pair is now called a chromosome

10 Telophase Spindle fibers disappear Chromosomes uncoil Nuclear membrane forms Cell divides (cytokinesis)

11 Interphase Prophase Metaphase Anaphase Telophase Interphase

12 9hExXZnM&feature=plcp I Intelligent P People M Make A Anything T Totally great!


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