1. Cell Division Notes Gallery

2. Cell Division - Notes Gallery2 Station 1 – Interphase Description : A period of growth in which a cell can spend 90% of its time. This part of the cycle is divided into three phases: G1, S, and G2.

3. Cell Division - Notes Gallery3 Station 1 – Interphase Plant cell

4. Cell Division - Notes Gallery4 Station 1 – Interphase Animal cell

5. Cell Division - Notes Gallery5 Station 1 – Interphase Chromatin is a mass of genetic material composed of DNA and proteins that eventually condenses to form chromosomes

6. Cell Division - Notes Gallery6 Station 2 – G 1 (Gap 1) Description : A period of activity in which cells do most of their growing. Cells increase in size and synthesize new proteins and organelles. The G1 checkpoint ensures that the cell is large enough to divide, and that enough nutrients are available to support the resulting daughter cells.

7. Cell Division - Notes Gallery7 Station 2 – S (Synthesis) Description : Synthesis of DNA molecules takes place as chromosomes are replicated. Key proteins are also synthesized.

8. Cell Division - Notes Gallery8 Station 2 – S (Synthesis) DNA replication: Use the color code key to color the replicating DNA strand in your resource book. Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine Nitrogenous Bases Color Key Adenine Thymine Guanine Cytosine

9. Cell Division - Notes Gallery9 Station 2 – G 2 (Gap 2) Description: Many organelles and molecules required for cell division are produced here. Once this phase is complete, the cell is ready for mitosis. The G2 checkpoint ensures that DNA replication in S phase has been completed successfully.

10. Cell Division - Notes Gallery10 Station 3 – Prophase Description:  The chromatin condenses into chromosomes.  The centrioles (in animals) separate, and a spindle begins to form.  The nuclear envelop breaks down.  Longest phase of mitosis.

11. Cell Division - Notes Gallery11 Station 3 – Prophase Plant cell

12. Cell Division - Notes Gallery12 Station 3 – Prophase Animal cell

13. Cell Division - Notes Gallery13 Station 4 – Metaphase Description:  The chromosomes line up across the center of the cell.  Each chromosome is connected to a spindle fiber at its centromere. Metaphase checkpoint ensures that all of the chromosomes are attached to the mitotic spindle by a kinetochore.

14. Cell Division - Notes Gallery14 Station 4 – Metaphase Plant cell

15. Cell Division - Notes Gallery15 Station 4 – Metaphase Animal cell

16. Cell Division - Notes Gallery16 Station 5 – Anaphase Description:  The sister chromatids separate into individual chromosomes and are moved apart.  A cell plate forms in plant cells.

17. Cell Division - Notes Gallery17 Station 5 – Anaphase Plant cell

18. Cell Division - Notes Gallery18 Station 5 – Anaphase Animal cell

19. Cell Division - Notes Gallery19 Station 6 – Telophase Description:  Nuclear envelope forms around each new set of chromosomes  Spindle breaks down  Chromosomes uncoil  A cell wall begins to form in plant cells.

20. Cell Division - Notes Gallery20 Station 6 – Telophase Plant cell

21. Cell Division - Notes Gallery21 Station 6 – Telophase Animal cell

22. Cell Division - Notes Gallery22 Station 7 – Cytokinesis Description:  Cytoplasm pinches in half.  Daughter cells have an identical set of duplicate chromosomes.

23. Cell Division - Notes Gallery23 Station 7 – Cytokinesis Plant cell

24. Cell Division - Notes Gallery24 Station 7 – Cytokinesis Animal cell

25. Cell Division - Notes Gallery25 Station 8 – Phase Identification Look at the onion root tip cells in your booklet and see how many cells you can find in each stage. Chose a color for each stage and outline the cell in that color. Cell Division Color Key Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

26. Cell Division - Notes Gallery26 Station 9 – G 0 (G zero) n If the cell does not receive a signal to “go ahead” at the G1 checkpoint it will not go into the dividing phases (Mitosis) n The cell is now said to be in G 0 n Most cells in your body are in this stage.

27. Cell Division - Notes Gallery27 Station 9 – G 0 (G zero) n Examples of cells in G 0 –Nerve cells –muscle cells –Liver cells (although these cells can be “called back” into the dividing phases of mitosis based on external cues such as growth factors)

28. Cell Division - Notes Gallery28 Station 10 – Cancer n Cancer is a disorder in which some of the body’s own cells lose the ability to control growth. n Cancer cells do not respond to the signals that regulate the growth of most cells (G1 checkpoint is bypassed). n As a result, they divide uncontrollably and form masses of cells called tumors that can damage the surrounding tissues.

29. Cell Division - Notes Gallery29 Station 10 – Cancer Cause/Effect What causes the loss of growth control that causes cancer?? Take a Cause/Effect map. Color code it correctly. Fill in the various causes of cancer. Fill in the effects for each cause. CANCERCANCER

30. Cell Division - Notes Gallery30 Mitosis Map includes is divided into InterphaseProphaseCell cycleG 2 Anaphase MitosisSG 1 Metaphase Telophase

31. Cell Division - Notes Gallery31 Mitosis Map Section 10-2 includes is divided into Cell Cycle Mitosis Interphase G 1 phase S phase ProphaseG 2 phase MetaphaseTelophaseAnaphase