Q.

Mucous presents on the surface of the mucosa of the stomach,smal and large intestine is:

A. Resistant to enzymes secreted into the lumen of the gastrointestinal tract.
B. Alkaline, and thus a poor buffer for alkaline foods.
C. A non-amphoteric protein.
D. Easily removed from the surface of the stomach by the gastric secretions during the gastric phase of digestion.
Answer» A. Resistant to enzymes secreted into the lumen of the gastrointestinal tract.
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