Question

1. Why does the action of salivary amylase stop in stomach?
2. Where does digestion of fats take place in alimentary canal?
3. Why does not lining of stomach wall dissolve in such an acidic pH?
4. Bile juice does not contain any enzyme but is essential for digestion. Why?
5. Why are pepsin and trypsin released in the inactive form in alimentary canal?
6. How is small intestine suitably adapted for absorption of food?
7. Why are villi present only in the small intestine?
8. Name the enzymes that bring digestion of proteins.
9. Give the test for the presence of proteins.
10. What do you observe when you heat sugar with Benedict's solution.​

Answer 1

Answer:

2. Digestion of fats take place in liver - emulsification of lipids stomach and amall instestine.

3. The lining of the stomach wall has gastric glands that secrete an acidic solution.

4. Bile juice does not contain any enzyme but is essential for digestion because it digest fat.

5. Pepsin and protein digestion enzymes provide in the acidic environment.

6. The villi in the small intestine provides a large surface area with that extensive network of blood capillaries.

7. Villi are specialised for absorption in the small intestine as they have a thin wall , one cell thick , which enables a shorter diffusion path.

9. Biuret solution is used to identify the presence of protein.

10. Thee solution changes its colour to orange - Red / brick red precipitate.

Explanation:

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