1.3 sceince

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Last updated 2:55 AM on 3/21/26
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7 Terms

1
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Cell theory :

  • All living organisims are made up of cel

  • Cell is basic unit of life

  • All cell come from pre existing cells

  •  -Cell undergo cell division to ensure genetic material is passed on

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Cell  division : The cell sycle of interphase

  • Cell cycle continually repeating process that allows cell to replicate their DNA , divide and grow

  • Replication occur  in main phase of cell cycle (interphase)  alongside other cellular process that help cell carry out important functions

<ul><li><p><span>Cell cycle continually repeating process that allows cell to replicate their DNA , divide and grow</span></p></li><li><p><span>Replication occur&nbsp; in main phase of cell cycle (interphase)&nbsp; alongside other cellular process that help cell carry out important functions</span></p></li></ul><p></p>
3
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Cell division produces new cell

  • After interphase , cell move  into two types of division (mitosis or meiosis depending on type of cell )

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Mitosis

  • Carried by (automosal ) normal body cell , produce geneticallly identical , or diploid cell  that contain 46 paired chromosomes

  • Mitosis  has four moods ( Prophase , metaphase , amaphase , telophase )

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Melosis

  • Produce unique sex cell / gametes also called haploid . 

  • •Gametes divide twice

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    •Produces cells that have half the amount of chromosomes

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    •This is so when two gametes are combined in reproduction, the resulting zygote will have the diploid amount

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    Meiosis has the same four phases (prophase, metaphase, anaphase,

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Diploid

Body cells that contain full set chromosme that is the sign for (2n)

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Haploid

sex cells containing half set of chromosomes in the sign of (n) lower case n