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Q: In the TCA cycle, at which of the following enzyme-catalyzed steps, incorporation of elements of water into an intermediate of the cycle takes place:
  • A. Citrate synthase
  • B. Aconitase
  • C. Maleate dehydrogenase
  • D. Succinyl Co-A synthase
Correct Answer: Option C - TCA cycle or Tricarboxylic cycle is also known as kreb’s cycle or citric acid cycle. This cycle represents a series of chemical reactions to release stored energy through the oxidation of acetyl CoA derived from carbohydrates, fats and proteins. Maleate dehydrogenases catalyzes the interconversion of malate to oxaloacetate.
C. TCA cycle or Tricarboxylic cycle is also known as kreb’s cycle or citric acid cycle. This cycle represents a series of chemical reactions to release stored energy through the oxidation of acetyl CoA derived from carbohydrates, fats and proteins. Maleate dehydrogenases catalyzes the interconversion of malate to oxaloacetate.

Explanations:

TCA cycle or Tricarboxylic cycle is also known as kreb’s cycle or citric acid cycle. This cycle represents a series of chemical reactions to release stored energy through the oxidation of acetyl CoA derived from carbohydrates, fats and proteins. Maleate dehydrogenases catalyzes the interconversion of malate to oxaloacetate.