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AP Biology Chapter 9: Cellular Respiration. LE 9-2 ECOSYSTEM Light energy Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic.

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Presentation on theme: "AP Biology Chapter 9: Cellular Respiration. LE 9-2 ECOSYSTEM Light energy Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic."— Presentation transcript:

1 AP Biology Chapter 9: Cellular Respiration

2 LE 9-2 ECOSYSTEM Light energy Photosynthesis in chloroplasts Cellular respiration in mitochondria Organic molecules + O 2 CO 2 + H 2 O ATP powers most cellular work Heat energy

3 Cellular Energy

4 ATP Structure

5 Phosphorylation using Free energy

6 LE 9-3 Reactants becomes oxidized becomes reduced Products H Methane (reducing agent) Oxygen (oxidizing agent) Carbon dioxideWater HC H H OO O OCO H H CH 4 2 O CO 2 Energy 2 H 2 O

7 Electron Transport Chain is is ALWAYS located on a membrane

8 Oxygen is at the end

9 Process of Cellular Respiration

10 Energy Investment Phase

11 Energy Payoff Phase

12 LE 9-10 CYTOSOL Pyruvate NAD + MITOCHONDRION Transport protein NADH + H + Coenzyme ACO 2 Acetyl Co A

13 Fig: 9.12 Krebs Cycle Simplified

14 Actual Krebs Cycle

15 Electron Transport Chain is located on the inner FOLDED membrane

16 Electron Transport Chain (Proteins are H+ Pumps)

17 Pumping H+ into a confined space

18 LE 9-15 Protein complex of electron carriers H+H+ ATP Glycolysis Oxidative phosphorylation: electron transport and chemiosmosis Citric acid cycle H+H+ Q III I II FAD FADH 2 + H + NADH NAD + (carrying electrons from food) Inner mitochondrial membrane Inner mitochondrial membrane Mitochondrial matrix Intermembrane space H+H+ H+H+ Cyt c IV 2H / 2 O 2 H2OH2O ADP + H+H+ ATP synthase Electron transport chain Electron transport and pumping of protons (H + ), Which create an H + gradient across the membrane P i Chemiosmosis ATP synthesis powered by the flow of H + back across the membrane Oxidative phosphorylation

19 Fig: 9.14 ATP Synthetase Complex

20 Is Oxygen present?

21 Fig: 9.17a Alcohol Fermentation

22 Fig: 9.17b Lactic Acid Fermentation

23 LE 9-19 Citric acid cycle Oxidative phosphorylation Proteins NH 3 Amino acids Sugars Carbohydrates Glycolysis Glucose Glyceraldehyde-3- P Pyruvate Acetyl CoA Fatty acids Glycerol Fats

24 LE 5-UN78 Amino group Carboxyl group carbon

25 LE 5-11b Ester linkage Fat molecule (triacylglycerol)

26 Negative Feedback

27 Phosphofructokinase (Puts on the SECOND ATP)


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