Under anaerobic or hypoxic conditions, some organisms can transfer electrons from NADH to pyruvate to form lactate and regenerate NAD
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- The oxidation of coenzyme ___________________ provides 1.5 ATP through electron transport.Some organisms can anaerobically convert glycerol to pyruvate. Could homolactic or alcoholic fermentation regenerate suffi cient NAD+ to support this pathway?NADH dehydrogenase 3 gene codes for a protein in the electron transport chain. Suppose that this protein is exposed to extremely high heat. What is likely to happen to this protein and why?
- What metabolic products are formed from pyruvate in each case: a) anaerobic conditions in the body b) anaerobic conditions in yeast c) aerobic conditionstwo of the reduced electron carriers in the citric acid cycle come directly from a) isomerization of citrate b) lactic acid fermentation under anaerobic conditions c) condensation of acetate to form long-chain fatty acid d) oxidative decarboxylations e) succinate dehydrogenase reactionWhen 24 acetyl Co-A molecule(s) are respired through the Krebs Cycle and the electron transport chain to oxygen, how many ATP molecules will be produced?
- Explain why the reaction catalyzed by the pyruvate dehydrogenase complex is a crucial juncture in metabolismThe aspartate–malate shuttle transfers electrons from cytoplasmic NADH to the electron transport system. Which of the following molecules is not directly involved in this pathway? a. malate b. oxaloacetate c. citrate d. α-ketoglutarateIf the Cori Cycle was operating as part of lactate recycling, would the pentose phosphate pathway need to be operational to supply electrons in the form of NADPH for the biosynthesis of glucose in the liver?
- Proliferating cells require NADPH for biosynthetic processes. Much of the NADPH is provided by the pentose phosphate pathway, but 10-formyl tetrahydrofolate is also a source of reducing power. Explain.During ETS, terminal electron acceptor finally receives electrons from a.Succinate dehydrogenase b.Cytochrome C-oxidase c.NADH dehydrogenase d.Complex IIIHow many total moles of ATP are created in a cell with an ATP synthase with 8 c subunits for every 28 moles of glucose that is completely oxidized in glycolysis and the Krebs cycle? Assume that NADH is transported by the malate aspartate shuttle.