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Name the energy source of the brain during starvation?

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Name the energy source of the brain during starvation?

(a) Fat

(b) Ketone bodies

(c) Protein

(d) Lipids

The question was posed to me during an interview.

The doubt is from Lipid Metabolism topic in portion Bioenergetics and Metabolism of Life Sciences

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The correct option is (b) Ketone bodies

For explanation I would say: In the absence of glucose or during prolonged starvation, the brain gets energy from ketone bodies by converting it to acetyl-CoA. This mechanism is absent in liver so, it cannot utilize ketone bodies as an energy source.

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