FOOD CHEMISTRY
CARBOHYDRATES PROTEINS AND LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the importance of cellulose in the human diet?
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It is digested to glucose which is absorbed and used to generate energy.
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It is digested, absorbed and recycled for use as long term energy storage.
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It is digested, absorbed and recycled for the formation of cell walls in humans.
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It is not digested but absorbs water and adds bulk to the feces to aid in defecation or removal of waste.
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Explanation:
Detailed explanation-1: -Ruminants have a large sac-like structure between the small and large intestines where the food containing cellulose is digested by the action of certain bacteria. On the other hand, humans cannot digest cellulose, as cellulose-digesting enzymes are absent in them.
Detailed explanation-2: -Cellulases break down the cellulose molecule into monosaccharides ("simple sugars") such as -glucose, or shorter polysaccharides and oligosaccharides. Cellulose breakdown is of considerable economic importance, because it makes a major constituent of plants available for consumption and use in chemical reactions.
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