The first enzyme that acts on food in the digestive system is
A
Pepsin
B
Trypsin
C
Chymotrypsin
D
Amylase
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Solution
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When the food is taken into the mouth, the first enzyme that acts on food is salivary amylase that break down the carbohydrates (starch) into simple sugars. It is secreted by the salivary glands in mouth.
Therefore, the correct answer is option D.
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