Which one of the following pairs of food components in humans reaches the stomach totally undigested?

Starch and fat

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Fat and cellulose

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Starch and cellulose

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Protein and starch

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Solution

The correct option is B Fat and cellulose
In humans starch is digested in the buccopharyngeal cavity, protein is digested in the stomach and fat in the small intestine.
In Humans cellulose is not digested because in humans cellulose-digesting enzyme is absent.
In Humans fats are digested in the stomach and the cellusose digesting enzyme is absent The pairs of food components in humans reaches the stomach totally undigested are fats and cellulose.
So, the correct answer is 'Fat and cellulose'.

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