Question

Most digestive enzymes are active in the _______ of the GI tract, not in the cells that produce the enzymes

Answer 1

Most digestive enzymes are active in the lumen of the small intestine, not in the cells that produce them.

Step-by-step explanation:

Most digestive enzymes are active in the lumen of the small intestine, not in the cells that produce the enzymes. The small intestine is where the majority of digestion and absorption of nutrients occur. It is lined with epithelial cells called enterocytes that have microvilli on their surface to increase the surface area for absorption.