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Catabolism of fatty acids stimulates gluconeogenesis in all of the following ways EXCEPT: By contributing to the...

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Biology

  1. Catabolism of fatty acids stimulates gluconeogenesis inall of the following ways EXCEPT:
  1. By contributing to the production of NADH
  2. By providing carbons for the glucose skeleton
  3. By activating pyruvate carboxylase
  4. By contributing to the production of ATP
  5. By producing Acetyl-CoA

55. [NADPH/NADP+] is maintained at a high level in cellsprimarily by:

  1. Lactate dehydrogenase
  2. The combined actions of glucose -6 phosphate dehydrogenase andgluconolactonase
  3. The action of the electron transport chain
  4. Shuttle mechanisms as the α-glycerophosphate dehydrogenaseshuttle
  5. The combined actions of transketolase and transaldolase
  1. If a cell requires more ribose-5-phosphate thanNADPH:
  1. Only the first phase of the pentose phosphate pathway wouldoccur
  2. Glycolytic intermediates would flow into the reversible phaseof the pentose phosphate pathway
  3. There would be sugar interconversions but no net release ofcarbons from glucose-6- phosphate
  4. The equivalent of the carbon atoms to glucose-6-phosphate wouldbe released as 6CO2
  5. Only part of this need could be met by the pentose pathway andthe rest would have to be supplied by another pathway.

Answer & Explanation Solved by verified expert
3.8 Ratings (623 Votes)
1 Correct answer is A Explanation The high concentration of NADH inhibits gluconeogenesis by preventing the oxidation of lactate to pyruvate In fact the high concentration of NADH will cause the reverse reaction to predominate and lactate will accumulate So it does not stimulate gluconeogenesis B is wrong answer because it has written By providing carbons for the glucose skeleton which is correct statement C is wrong answer because it has written By activating pyruvate carboxylase which is correct statement D is wrong answer because it has written By contributing to the production of ATP which is correct statement E is wrong answer    See Answer
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