5. You get the point.

6. Cellular Energetics Unit Cellular respiration and Photosynthesis

7. Cellular Respiration (chapter 9) Cellular respiration involves the break down of food particles for energy. NOT BREATHING! Cellular respiration and fermentation are catabolic (energy-yielding) pathways. Redox (oxidation-reduction) reactions release energy when electrons move closer to electronegative atoms (more stable configuration). Electrons “fall” from organic molecules to oxygen during cellular respiration (aerobic). The “fall” of electrons during cellular aerobic respiration is stepwise, via NAD + and an electron transport chain.

10. Oxidation-Reduction Reactions

11. Electron shuttle: You have to admit That this is really fun!

13. Cellular Respiration (chapter 9), continued Respiration involves glycolysis, the Krebs cycle (citric acid cycle), and electron transport. Glycolysis harvests chemical energy by oxidizing glucose to pyruvate. The Krebs cycle completes the energy-yielding oxidation of organic molecules. The inner mitochondrial membrane (cristae) couples energy transport to ATP synthesis. Cellular respiration generates many ATP molecules for each sugar molecule it oxidizes.

14. 2 ATP 32-34 ATP Cellular Respiration Overview

15. Substrate level phosphorylation

16. Glycolysis overview

17. Glycolysis, detailed

19. Intermediate step (the formation of Acetyl CoA)

26. Cellular Respiration (chapter 9), continued Fermentation enables some cells to produce ATP without the help of oxygen (an inorganic electron acceptor molecule). Glycolysis and the Krebs cycle connect to many other metabolic pathways. Feedback mechanisms control cellular respiration.

30. Macromolecules Other than glucose Can be catabolized (obviously)

31. Feedback Inhibition

32. ATP

34. Cellular Respiration (chapter 9) Cellular respiration involves the break down of food particles for energy. NOT BREATHING! Cellular respiration and fermentation are catabolic (energy-yielding) pathways. Redox (oxidation-reduction) reactions release energy when electrons move closer to electronegative atoms (more stable configuration). Electrons “fall” from organic molecules to oxygen during cellular respiration (aerobic). The “fall” of electrons during cellular aerobic respiration is stepwise, via NAD + and an electron transport chain.

35. Cellular Respiration (chapter 9), continued Respiration involves glycolysis, the Krebs cycle (citric acid cycle), and electron transport. Glycolysis harvests chemical energy by oxidizing glucose to pyruvate. The Krebs cycle completes the energy-yielding oxidation of organic molecules. The inner mitochondrial membrane (cristae) couples energy transport to ATP synthesis. Cellular respiration generates many ATP molecules for each sugar molecule it oxidizes.

36. Cellular Respiration (chapter 9), continued Fermentation enables some cells to produce ATP without the help of oxygen (an inorganic electron acceptor molecule). Glycolysis and the Krebs cycle connect to many other metabolic pathways. Feedback mechanisms control cellular respiration.

44. Photosynthesis

47. Overview of Photosynthesis

52. Chlorophyll Structure

53. Non-cyclic electron flow

55. Cyclic electron flow

56. Chemiosmosis, Look familiar?

57. Thylakoid Membrane

62. Melvin Calvin