1 / 27

The Cell Cycle

The Cell Cycle. CELL DIVISION. 2 DAUGHTER CELLS. Here is what we’re going to learn about. PARENT CELL. The Stages of the Cell Cycle. CELL GETS READY. STAGE 1: Interphase STAGE 2: Mitosis Prophase Metaphase Anaphase Telophase STAGE 3: Cytokinesis. NUCLEUS DIVIDES. CELL MEMBRANE

cachez
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. CELL DIVISION 2 DAUGHTER CELLS Here is what we’re going to learn about. PARENT CELL

  3. The Stages of the Cell Cycle CELL GETS READY STAGE 1: Interphase STAGE 2: Mitosis Prophase Metaphase Anaphase Telophase STAGE 3: Cytokinesis NUCLEUS DIVIDES CELL MEMBRANE DIVIDES

  4. Phase 1: Growing • The cell GROWS to its full size and produces the structures it needs. • The cell may make new ribosomes and enzymes and copies are made of mitochondria. THE CELL LOOKS AND ACTS PRETTY NORMAL IN THIS PHASE

  5. INTERPHASE - Growing

  6. Cell grows to its normal size • Cell makes a copy of its DNA • (DNA REPLICATION) • 2 Centrioles are copied to make • a total of 4 INTERPHASE

  7. CENTRIOLE

  8. Phase 2: Copying DNA • The cell makes an exact copy of the DNA in its nucleus. This process is called DNA REPLICATION. • Important step, because the new cells (daughter cells) must have an exact copy of the first cell’s (parent cell) DNA. • After the Copying DNA Phase, 2 identical sets of DNA are in the parent cell.

  9. Phase 2: Copying DNA(occurs inside nucleus) ORIGINAL ORIGINAL COPY

  10. What is Stage 2: Mitosis? This is the 2nd Stage of the Cell Cycle. • This is the stage during which the cell’s nucleus divides into 2 new Nuclei. During mitosis, 1 copy of the parent’s DNA is made for each of the 2 daughter cells. • There are 4 phases in Mitosis: prophase, metaphase, anaphase, and telophase.

  11. MITOSIS:PROPHASE

  12. Chromatin shrinks to make • Chromosomes • Spindle fibers are formed • Membrane around nucleus • breaks down MITOSIS: PROPHASE

  13. CHROMOSOME • Made up of 2 chromatids held together by a centromere. • Chromatids are made of DNA.

  14. MITOSIS: METAPHASE

  15. Chromosomes line up in • middle of cell • Spindle fibers grab onto • centromeres of chromosomes MITOSIS: METAPHASE

  16. MITOSIS: ANAPHASE

  17. Centromeres split • Spindle fibers pull chromatids • to either side of cell • (CYTOKINESIS BEGINS: cell • stretches out) MITOSIS: ANAPHASE

  18. MITOSIS: TELOPHASE

  19. Chromosomes stretch out • and begin to turn back into • chromatin • Nuclei reform • (CYTOKINESIS CONTINUES: • cell pinches in the • middle) MITOSIS: TELOPHASE

  20. Phase 3: Preparing for Division • The cell gets ready to divide. • The cell produces structures that it will use to divide into new cells. • The cell makes a copy of its 2 centrioles, to now have 4 of them. • Once this step is over, the cell is ready to divide.

  21. Cytokinesis in an Animal Cell BEFORE DURING AFTER

  22. Each daughter cell is given • equal organelles and 1 • nucleus. • Cell membrane splits, forming • 2 new daughter cells. ANIMAL CELL: CYTOKINESIS

  23. Cytokinesis in Plant Cells

  24. A cell plate forms in the • middle of the cell. • The cell plate turns into a cell • membrane that cuts the cell into • 2 daughter cells. • New cell walls then form • around each of the daughter • cells to protect them.. PLANT CELL: CYTOKINESIS

  25. How long do the 3 stages take? HOW LONG DOES THE WHOLE THING TAKE? HUMAN LIVER CELL

More Related