1 / 14

The Cell Cycle

The Cell Cycle . Interphase. The stage where a cell spends most of its life. Period of growth and development. This is where cells just “do what they do.” Muscle and nerve cells are always in interphase. Why?. Interphase. 3 stages G1- first stage of growth and energy production (ATP)

pegeen
Download Presentation

The Cell Cycle

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. The Cell Cycle

  2. Interphase • The stage where a cell spends most of its life. • Period of growth and development. • This is where cells just “do what they do.” Muscle and nerve cells are always in interphase. Why?

  3. Interphase • 3 stages • G1- first stage of growth and energy production (ATP) • S phase- DNA duplication or synthesis, uses ATP from G1 • G2- second stage of cell growth and more energy production (ATP)

  4. Mitosis • The process where a single cell divides resulting in two identical cells, each containing the same number of chromosomes and genetic content as that of the original cell. • Takes place in somatic cells. • All body cells except reproductive cells (sperm and egg)

  5. A Few Key Terms To Understand Mitosis • Chromatids- two chromosomes attached together by a centromere. • This happens after the S-phase in interphase. • Centromere- button-like body that joins single chromosomes to form chromatids. • Centriole- cylindrical shaped organelle that provides the anchor for spindle fibers during mitosis • Spindle fibers- a network of filaments involved in moving and separating chromosomes during mitosis

  6. Prophase • The first stage of mitosis. • Chromatin coil and condense forming a chromosome. • Centrioles develop and move to opposite ends of the cell. • Spindle fibers form. • Nuclear membrane begins to break down. • Allows chromosomes to move throughout the center of the cell. • http://player.discoveryeducation.com/index.cfm?guidAssetId=299A8CD3-31E3-4E5E-8D76-046C8DDF2681&blnFromSearch=1&productcode=US

  7. Prophase • Draw the prophase stage in the space provided. • Label- Centrioles, Spindle fibers, Chromatids, Nuclear Membrane, Centromere

  8. Metaphase • The second stage of mitosis. • The chromatids align at the exact center (equator) of the cell. • http://player.discoveryeducation.com/index.cfm?guidAssetId=96298FF3-9D5F-41ED-B009-0BEBD2DB50E4&blnFromSearch=1&productcode=US

  9. Metaphase • Draw the stage of metaphase • Label- Chromatids, Centriole, Spindle fibers, Centromere, Equator

  10. Anaphase • The third stage of mitosis. • Centromeres split, and spindle fibers pull chromatids apart making separate chromosomes. • Welcome to Discovery Education Player

  11. Anaphase • Draw the stage of anaphase • Label- Centriole, Spindle fiber, chromosomes

  12. Telophase • The fourth stage of mitosis. • This stage is the opposite of prophase. • Chromosomes uncoil to form a mass of chromatin. • A nuclear membrane forms around each mass of chromatin. • Spindle fibers breakdown and disappear. • MITOSIS HAS ENDED!!! • Welcome to Discovery Education Player

  13. Telophase • Draw the stage of telophase. • Label- Chromatin, Nuclear membrane

  14. Cytokinesis • The splitting apart of the daughter cells. • Animal cells- cleavage occurs and the cells pinch apart. • Plant cells- a cell plate forms and grows outward to form the cell wall. • http://player.discoveryeducation.com/index.cfm?guidAssetId=55343882-7B33-4564-A5AA-D38250BAFCA9&blnFromSearch=1&productcode=US

More Related