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The first product of TCA cycle is ___________

(a) Fumaric acid

(b) Oxalic acid

(c) Malic acid

(d) Citric acid

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Query is from Practical Benefits topic in chapter Practical Benefits of Fermentation of Fermentation Technology

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Correct choice is (d) Citric acid

The explanation is: The first product of TriCarboxylic Acid cycle is citric acid. Therefore, it is also called a citric acid cycle or Krebs cycle. The cycle is primarily regulated by the concentration of ATP, NADH and is controlled by the key enzymes like isocitrate dehydrogenase, α-ketoglutarate dehydrogenase, etc.

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