Question

why humans could not digest cellulose

Answer 1

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HERE IS UR ANSWER..

Humans, unlike cows for ex. don't have the necessary bacteria in their intestines that make the enzymes(cellulases) necessary to breakdown the 1-4 beta glucose bonds. So we cannot break down cellulose into its constituent glucose molecules as we do with starch. Therefore this is secreted as unbroken down chains of glucose called fiber.

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Answer 2

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Humans are unable to digest cellulose because the appropriate enzymes to breakdown the beta acetal linkages are lacking.


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