1 / 19

Mitosis: Cell Division Summary

Get a comprehensive overview of cell division through mitosis, covering phases, chromosome structure, and cell cycle processes. Learn about the key stages like prophase, metaphase, anaphase, and telophase. Discover how cells replicate and divide to form identical daughter cells.

rdowling
Download Presentation

Mitosis: Cell Division Summary

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cell Division: Mitosis

  2. Section 8.2 Summary – pages 201 - 210 • Cell theory • All cells come from pre-existing cells • Cells are the basic unit of organization of organisms. • All living things are made of cells.

  3. Section 8.2 Summary – pages 201 - 210 Cell Division • The process when 2 cells are produced from one cell • Begins with one parent cell • Results in 2 daughter cells identical to the parent cell

  4. Section 8.2 Summary – pages 201 - 210 • Chromosomes--carriers of the genetic material that is copied and passed from generation to generation of cells.

  5. Section 8.2 Summary – pages 201 - 210 The structure of eukaryotic chromosomes Centromere Sister chromatids Supercoil within chromosome Chromosome Continued coiling within supercoil Histone H1 Nucleosome DNA

  6. Section 8.2 Summary – pages 201 - 210 • Cell cycle—sequence of growth and division of a cell, divided into 3 main periods • Interphase • Mitosis • Cytokinesis Mitosis Interphase Cytokinesis

  7. Section 8.2 Summary – pages 201 - 210 • Interphase—Cell grows in size, carries on metabolism, makes DNA, and prepares for division Interphase DNA synthesis and replication Centrioles replicate; cell prepares for division Rapid growth and metabolic activity

  8. Section 8.2 Summary – pages 201 - 210 • Mitosis—Process of cell division where 2 identical daughter cells are formed Mitosis is divided into 4 phases—prophase, metaphase, anaphase, telophase Mitosis

  9. Section 8.2 Summary – pages 201 - 210 Prophase: longest phase of mitosis • Chromatin--coils into visible chromosomes • Sister chromatids— doubled strands of DNA held together by a centromere Spindle fibers Disappearing nuclear envelope Doubled chromosome

  10. Section 8.2 Summary – pages 201 - 210 Prophase • Nuclear envelope— begins to disappear and nucleolus disintegrates • Centrioles—are in opposite ends of the cell • Spindle Fibers are formed Spindle fibers Disappearing nuclear envelope Doubled chromosome

  11. Section 8.2 Summary – pages 201 - 210 Sister Chromatids Centromere Sister chromatids

  12. Section 8.2 Summary – pages 201 - 210 Metaphase: shortest phase • Doubled chromosomes are lined up along the equator (middle) of the cell Centromere Sister chromatids

  13. Section 8.2 Summary – pages 201 - 210 Anaphase • Chromosomes are pulled apart at the centromere and separated

  14. Telophase Section 8.2 Summary – pages 201 - 210 • Chromatids are in different sides of the cell • Chromatids unwind • Nuclear envelope and nucleolus reappear • Cell membrane begins to split cell in 2 Nuclear envelope reappears Two daughter cells are formed

  15. Section 8.2 Summary – pages 201 - 210 • Cytokinesis— process where the cell’s cytoplasm divides between 2 new cells • In animal cells—2 cells are separated by membrane “pinching in” between them • In plant cells—2 cells are separated by a cell plate that forms in between them

  16. Mitosis Prophase Metaphase Anaphase Telophase

  17. Mitosis Prophase Metaphase Anaphase Telophase

  18. IPMAT • I Picked My Apples Today • Idiot, Pass Me Another Taco • I Propose All Men Are Toads

More Related