The first enzyme to mix with food in the digestive tract is amylase. It is secreted by the salivary gland and it acts on starch present in the food and breaks it down into smaller carbohydrate molecules.
The enzyme trypsin (present in the pancreatic juice) activates the inactive enzyme chymotrypsinogen into chymotrypsin.
Chymotrypsinogen + Trypsin --------> Chymotrypsin
(Inactive) ...
Among the common STs-gonorrhea, syphilis, genital herpes, chlamydiasis, hepatitis-B, AIDs etc., hepatitis-B, and AIDs are not infections of the reproductive organs though their mode of transmission could be through sexual...
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(i) absorption of food small intestine.
(ii) chewing of food buccal cavity (Mouth).
(iii) killing of bacteria stomach.
(iv) complete digestion of food small intestine.
(v) formation of faeces large intestine.
