1. Cellular Respiration

2. Food Gives us Energy! mmm

3. How is Energy Transferred? Think food chain! First Law of Thermodynamics aka the Law of Conservation of Energy E cannot be created or destroyed, only transferred (converted)

5. ATP=Type of Energy for The Cell

7. Glycolysis First step in cellular respiration Process occurs in cytoplasm Glyco ( sugar ) Lysis ( break apart ) When oxygen is present, produces two molecules of pyruvic acid, a 3 carbon compound 2ATP are used 4ATP are made Net gain 2ATP

8. Glycolysis Sugar Cutting Pyruvate

9. Krebs Cycle Pyruvic acid moves to the second stage of cellular respiration Occurs in the mitochondria Form Acetyl- CoA Then forms citric acid Continues to be broken down releasing CO2 along the way. Makes 2 ATP Also produces high energy electrons NADH and FADH2

10. Krebs Cycle

11. Electron Transport Chain The electrons are passed from FADH2 and NADH to the electron transport chain Uses these high energy electrons to convert ADP to ATP Net gain of 32 ATP

13. 2 ATP 32 ATP

14. Fermentation Oxygen is not present Anaerobic respiration Cells convert NADH to NAD by passing energy electrons back to pyruvic acid Allowing for a steady supply of ATP Two types of anaerobic respiration Lactic acid Alcoholic

16. Alcoholic fermentation Yeasts and other microbes Forms ethyl alcohol and carbon dioxide Causes bread to rise

17. Lactic acid fermentation Pyruvic acid accumulates can be converted to lactic acid Produced in your muscles during rapid exercise when oxygen can’t be replaced quickly Build up of lactic acid causes painful, burning sensation Unicellular organisms produce lactic acid as waste Cheese, yogurt, etc Pickles and sauerkraut

18. Glucose 2234

19. Glucose Molecule C 6 H 12 O 6

20. Hydrogen Stripping

21. Sucrose

22. Starch

23. Alcoholic Fermentation

24. Lactic Acid Fermentation

25. Cellular Respiration needs Oxygen

26. Krebs Cycle

27. Electron Transport Chain