Q) Explain why anaerobic respiration produces so few ATP per glucose oxidized.
Main points | |
Key idea: | Effect of the lack of oxygen during anaerobic respiration |
· O2 as last e acceptor of electron transport chain (ETC) · Anaerobic respiration - no O2 to accept e + H+ at end of ETC · Result - flow of e throu ETC disrupted, no ATP produced via oxidative phosphorylation, NAD + FAD remain reduced, NAD+ + FAD not re-generated to participate in link rx + Krebs cycle · Ref to no ATP produced in Krebs cycle via substrate level phosphorylation | |
Key idea: | To regenerate NAD+ for glycolysis |
· Cytoplasmic NADH reduce pyruvate (fr glycolysis) to ethanol in plants/yeast or lactate in animals · Result: re-generates NAD+ for glycolysis to proceed to produce 2 ATP/ glucose via substrate level phosphorylation · Ref to glucose incompletely oxidized | |
Comments: (i) Visualize the answer with the aid of a labelled diagram. (ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations) (iii) Read again within the next 24h & once more within 72h (do not spend more than 10min) | |
No comments:
Post a Comment