Answer; The most likely result is that Pepsin would probably NOT break down proteins in the test tube because pepsin is designed to work at very acidic pH ranges.
Explanation; Enzymes are very specific in that they work on a specific substrate and specific conditions such as optimum pH and temperature. Each enzyme has its own optimum pH and temperature; without which they would be inactive or denatured. For example higher temperatures higher than the optimum pH denatures the enzyme while low temperatures inactivates the enzyme. Pepsin work best at low pH or acidic pH in the stomach, therefore, changing its pH will render it function-less and thus it wont break down proteins.
The question here is, is glucose a protein? No, it's not; it's a carbohydrate.
So pepsin would not break it down: it would most probably not react with glucose at all, since pepsin breaks down proteins, not carbohydrates. <span />
In the small intestine, villi are found present. These villi which appear like a finger-like tissue structure are about 0.5–1.6mm in length in human beings.They have mucosal cells that help in absorption of nutrients. A villus has several microvilli, which increases the surface area of the intestinal wall for faster absorption of nutrients.
