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Digestion and Absorption

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Describe the process of digestion of protein in stomach.


The digestion of the proteins starts in the stomach with the help of pepsin. The proenzyme pepsinogen gets converted into the active enzyme pepsin; on exposure to hydrochloric acid. Pepsin converts proteins into proteoses and peptones (peptides).

 begin mathsize 16px style bold Pepsinogen bold space bold rightwards arrow with bold HCl on top bold space bold Pepsin bold space

bold Pepsin bold space bold plus bold Protein bold space bold rightwards arrow bold space bold Proteoses bold space bold plus bold space bold Peptones bold. bold space end style

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What is the function of enamel in digestion?

The enamel helps in the mastication of food.
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Name the fat soluble vitamins.

Vit A, D, E and  are fat soluble vitamins.
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What is Diphyodont ?

Diphyodont is the condition of having two set of teeth during the life of an organism. For example : humans are diphyodont as they have two set of teeth namely temporary milk or deciduous teeth which are replaced by permanent or adult teeth. 

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What are Sanguivorous animals ?

The animals which suck blood e.g. leech, vampire bat, female mosquito etc.
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What is the order of arrangement of teeth in each half of the upper and lower jaw ?

The order of arrangement of teeth in each half of the upper and lower jaw is I,C,PM,M.  I (incisors), C (cannine), PM (premolars), M (molars).
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