1. Photosynthesis and Respiration

2. Photosynthesis: plant cells making glucose for energy
light
6 CO H2O → C6H12O O2
carbon water glucose oxygen
dioxide

3. This process is the opposite of respiration
This process is the opposite of respiration.   It stores energy from the sun in the form of food.

4. Respiration: all cells release energy when they “burn” fuel/food

5. This process is the opposite of photosynthesis.
Respiration RELEASES energy from fuel/food.

6. Mitosis Meiosis

7. Mitosis
is the process in which the nucleus divides to form two new nuclei.
produces two daughter cells that are identical to the parent cell. 

8. Animated Mitosis Cycle
Interphase
Prophase
Metaphase
Anaphase
Telophase & Cytokinesis

9. Interphase Cell prepares for division by:
Parent Cell
Cell prepares for division by:
Chromosomes are copied (# doubles)
Photographs from:

10. Prophase Mitosis begins (cell begins to divide) Nucleus disappears .
Centrioles (or poles) appear and begin to move to opposite end of the cell.
between the poles.

11. Chromosomes line up in the Middle
Metaphase
Chromosomes line up in the Middle

12. Chromosomes separate and move to opposite sides.
Anaphase
Chromosomes separate and move to opposite sides.

13. The cell divides into two. (Two new nuclei form)
Telophase
The cell divides into two. (Two new nuclei form)
The nucleus re-forms

14. Cytokinesis occurs after mitosis
Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.

15. Animal Mitosis -- Review
Interphase                                                             
Prophase                                                             
Metaphase                                                             
Anaphase                                                             
Telophase                                                             

16. Cell Cycle 17

17. - Cell Division
The Cell Cycle 18 18

18. Mitosis Animation

19. Meiosis

20. Produces sex cells
Sperm
eggs
Goes through the same phases as mitosis, only it goes it twice
Produces 4 new cells
Meiosis = half number of chromosomes

21. Second Division Prophase II Telophase II Metaphase II
Four cells with half the number of chromosomes as the original cell
Anaphase II
Daughter Cells

22. Summary
mitosis: interphase, prophase, metaphase, anaphase, and telophase = 2 cells
meiosis: prophase 2, metaphase 2, anaphase 2, and telophase = 4 daughter cells