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

  1. A
    Starch and fat
  2. B
    Fat and cellulose
  3. C
    Starch and cellulose
  4. D
    Protein and starch

Solution & Step-by-step Explanation

In the mouth, salivary amylase begins the digestion of starch. Proteins and fats undergo little to no digestion in the oral cavity. Humans lack the enzyme cellulase, so cellulose remains undigested. Hence, fat and cellulose reach the stomach in an undigested state.

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Which one of the following pairs of food components in humans reaches the stomach totally undigested?
A
Starch and fat
B
Fat and cellulose
C
Starch and cellulose
D
Protein and starch

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Digestion and AbsorptionEnzymesSalivary Amylase

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