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Module 8 : Cell Respiration and Photosynthesis (Option C for SL only)

Module 8 : Cell Respiration and Photosynthesis (Option C for SL only). 8.1 Cell Respiration.

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Module 8 : Cell Respiration and Photosynthesis (Option C for SL only)

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  1. Module 8:Cell Respiration and Photosynthesis(Option C for SL only) 8.1 Cell Respiration

  2. 8.1.1 State that oxidation involves the loss of electrons from an element, whereas reduction involves a gain of electrons; and that oxidation frequently involves gaining oxygen or losing hydrogen, whereas reduction frequently involves losing oxygen or gaining hydrogen. OIL RIG

  3. 8.1.2 Outline the process of glycolysis, including phosphorylation, lysis, oxidation and ATP formation. (fructose-1,6-bisphosphate) (G3P) Reduction Substrate level phosphorylation – phosphate added directly onto ADP

  4. 8.1.3 Draw and label a diagram showing the structure of a mitochondrion as seen in electron micrographs. Label: Cristae, inner membrane, outer member, intermembrane space, matrix, ribosomes

  5. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs cycle, the role of NADH + H+, the electron transport chain and the role of oxygen. • Pyruvate enters mitochondrion • Enzymes in matrix remove a carbon (decarboxylation) and hydrogen (oxidation) • Hydrogen is accepted by NAD+ (forms NADH) • The whole process is called oxidative decarboxylation • The product is an acetyl group that reacts with coenzymeA (CoA) • Acetyl CoA then enters the Krebs Cycle

  6. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs cycle, the role of NADH + H+, the electron transport chain and the role of oxygen.

  7. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs cycle, the role of NADH + H+, the electron transport chain and the role of oxygen. • Occurs in matrix of mitochondrion • Decarboxylation occurs • Oxidation/removal of hydrogen by NAD and FAD • Substrate level phosphorylation

  8. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs cycle, the role of NADH + H+, the electron transport chain and the role of oxygen. http://highered.mcgraw-hill.com/olc/dl/120071/bio11.swf

  9. 8.1.4 Explain aerobic respiration, including the link reaction, the Krebs cycle, the role of NADH + H+, the electron transport chain and the role of oxygen. • Transfer of hydrogen to inner membrane carriers • Hydrogen is pumped across inner membrane • Creates a concentration gradient • Electrons transferred between carriers • Chemiosmosis • Hydrogen ions passes down concentration gradient through ATP synthase • Oxygen is the final electron acceptor and this forms water

  10. 8.1.5 Explain oxidative phosphorylation in terms of chemiosmosis. • This involves the movement of protons (H+) to provide energy for the phosphorylation of ADP to form ATP using the electron transport chain (ETC) • ATP synthase found on the inner mitochondrial membrane uses the H+ gradient to make ATP • H+move passively down the concentration gradient back into the matrix • 1 NADH = 3 ATP • 1 FADH2 = 2 ATP

  11. 8.1.6 Explain the relationship between the structure of the mitochondrion and its function. • Cristae increase SA for ETC function • Membranes provides barrier for proton accumulation • Enzymes embedded in membranes in order for ETC and chemiosmosis to occur.

  12. Summary Chart (1 glucose) Task: Try filling the chart out!

  13. Summary Chart (1 glucose)

  14. ATP Count

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