Question

How many total dehydrogenation occur in the citric acid cycle?

Answer 1

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Answer 2

Hey dear,

◆ Answer-
3 Dehydrogenation reactions

◆ Explaination-
In each cycle of citric acid cycle, there are three dehydrogenation reactions.

a) Isocitrate undergoes dehydrogenation in presence of enzyme isocitrate dehydrogenase.
Isocitrate + NAD+ ---> Oxalosuccinate + NADH2

b) Succinate is oxidized to fumarate in presence of succinate dehydrogenase.
Succinate + FAD+ ---> Fumarate + FADH2

c) With the help of malate dehydrogenase, malate is converted to oxaloacetate.
Malate + FAD+ ---> Oxaloacetate + FADH2

Hope it helps...