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Nutrition : Classes of Food — BIOLOGY STD 9 — Question

ICSE BoardEnglish MediumSTD 9BIOLOGYNutrition : Classes of Food2 Marks
Question
Cellulose though a carbohydrate does not serve as food for us. Explain.
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Answer

Humans cannot digest cellulose because they do not possess the enzymes required to digest cellulose in their gut. Our gut has enzymes which digest starch.

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