Question

(a) Write the function of the following in the human alimentary canal:
(i) Saliva
(ii) HCl in stomach
(iii) Bile juice
(iv)Villi
(b) Write one function each of the following enzymes:
(i) Pepsin
(ii) Lipase

Answer 1

Explanation:

1. Saliva- it break down the starch into sugar and it moisturised the food so that food can be swallowed easily.

2. HCL in stomach - it makes the food acidic so that enzyme pepsin can act on the food.

It also kills the bacteria which may enters with food into the stomach

3. Bile juice - it makes the acidic food into alkaline so that pancreatic enzyme act on it

bile salts digest the fat pr. in food