Ch. 3.1 Cell cycle overview

1. 10/30/14 Bell work: What are the phases and stages of the cell cycle? Announcements: FINISH SCIENCE FAIR EXPERIMENT!!! Tables & Graphs due Mon. 11/3 #8 Objectives: Students will graph data. Students will identify the phases of cell cycle. Students will explain how a cell divides.

2. Ch. 3.1 Cell Cycle & Cell Division Instead of taking notes, check your worksheet. (ADV: check your notes)

3. Focus Questions: What are the phases of cell cycle? What happens to the DNA during the cell cycle ? What happens during the mitotic phase? Why is cell division important?

4. 1. What are the phases of cell cycle?

5. During which part of cell cycle does a cell spend most of its life? Mitosis Interphase Prophase Metaphase Telophase Anaphase Cytokinesis 45

6. 1. What are the phases of cell cycle? Organelles replicate Check the “Phases of the cell cycle chart”

7. Interphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

8. 2. What happens to the DNA during the cell cycle? Interphase – DNA is copied during S stage DNA coils up into chromosomes Identical chromosomes pair up to form a duplicated chromosome (with 2 sister chromatids) Copy on the back

9. 2. What happens to the DNA during the cell cycle? During mitotic phase, sister chromatids will divide into 2 cells Copy on the back Draw this

10. What is the name for the coiled up DNA that are an X-shape? Chromatid DNA Chromatin Chromosome 45

11. 3. What happens during the mitotic phase? Mitosis (nucleus & DNA divides) Cytoplasm & rest of cell divides

12. Prophase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm Spindle fibers Centrioles

13. Metaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

14. Anaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

15. Telophase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

16. Cytokinesis Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

17. Which of the following is NOT a part of mitosis? Prophase Metaphase Anaphase Telophase Cytokinesis 45

18. 4. Why is cell division important? Reproduction – unicellular organisms Growth & development Replacement – replaces old & worn out cells Repair – from injuries & other damage

19. Interphase

20. Prophase

21. Metaphase

22. Anaphase

23. Telophase

24. Cytokinesis