1 / 16

Cell Cycle: Stages, Growth, and Division

Learn about the stages of the cell cycle, including growth, DNA replication, and cell division. Understand why cells are small and why it's important to cut hair, nails, and lawn. Explore the concept of cell growth and reproduction, and discover the main stages of the cell cycle: Gap 1, Synthesis, Gap 2, and Mitosis.

samanthaf
Download Presentation

Cell Cycle: Stages, Growth, and Division

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. Schedule • First Five • Cell Cycle Educreation • HW: Cornell Notes 5.1 and 5.2 – Due Wed. First Five 2/1 1. Based on your current knowledge: a. Why do we always have to cut our hair, our fingernails, and the lawn? b. Why are cells small? 2. Check Quarter 2 grades, hang Posters, and pick up work. GQ: How do cells live?

  2. Cell Cycle Educreations (Chapter 5, Section 1) • Must include a. Stages of the cycle b. What happens in all the stages c. Picture showing what is happening in each stage

  3. First Five 1/27 • Schedule • First Five • Cell Cycle Notes • Cell Cycle Quiz • HW: Study Guide 5.1 and 5.2 – Due Tomorrow • Without using your educreation, write down as many stages of the cell cycle you can remember. • Make sure you have Socrative for students downloaded on your iPad. GQ: How do cells live?

  4. KEY CONCEPT Cells have distinct phases of growth, reproduction, and normal functions.

  5. The cell cycle has four main stages. • The cell cycle is a regular pattern of growth, DNA replication, and cell division.

  6. The main stages of the cell cycle are gap 1, synthesis, gap 2, and mitosis. • Gap 1 (G1): cell growth and normal functions • DNA synthesis (S): copies DNA • Gap 2 (G2): additional growth • Mitosis (M): includes division of the cell nucleus (mitosis) and division of the cell cytoplasm (cytokinesis) • Mitosis occurs only if the cell is large enough and the DNA undamaged.

  7. Videos • http://www.youtube.com/watch?v=7P4IakYQ6V0 • http://www.youtube.com/watch?v=efyV-YxV0P0 • http://www.youtube.com/watch?v=1EB8q9aR8Hk • http://www.youtube.com/watch?v=4A4LqsPau28 • http://www.youtube.com/watch?v=65SODTL_QsA • http://www.youtube.com/watch?v=gjZHOWaRSpk • http://www.youtube.com/watch?v=jQf4T_cBA3c

  8. Cells divide at different rates. • The rate of cell division varies with the need for those types of cells. • Some cells are unlikely to divide (G0).

  9. Cell size is limited. • Volume increases faster than surface area.

  10. Surface area must allow for adequate exchange of materials. • Cell growth is coordinated with division. • Cells that must be large have unique shapes.

  11. Doubling and Division • If we want two batches of cookies, not just one, what do we need to do to the recipe?

  12. First Five 1/28 • Schedule • First Five • Cycle quiz • DNA • Wrap up • HW: Study Guide 5.1 and 5.2 – due Today • What happens in the S phase of the cell cycle? • Write down everything you know about DNA. • Turn in your Study Guide Sec. 5.1 and 5.2 to the TA desk GQ: How does the structure of DNA relate to its function?

  13. Doubling and Division • For a cell to be functional after division, what needs to be present? • Complete set of DNA • Organelles • Cytoplasm • Cell Membrane • Cell wall (if it is a plant cell)

  14. Immortal Cells • How do scientists define immortal? • What can you infer (guess) about how cell division in a normal cell compares to cell division in a cancer cell?

  15. Do Now • Why do cells have to double their organelles, cytoplasm, and DNA?

  16. Review • During which stage of the cell cycle is the DNA copied? • What limits the maximum size of a cell • Suppose you treat cells with chemicals that block cytokinesis, describe what you think the cells will look like.

More Related