Question

Function of pepsin,ptaylin,reninn

Answer 1

Answer:

Enzyme Secreted by Function

Pepsin Stomach    Converts other proteins to peptides

Renin Stomach  Converts milk proteins to peptides

Ptyalin Salivary Glands Converts starch to maltose

Answer 2

❇ $\Large{ \rm{ \underline{ \underline{ \red{Function \: of \: above \: enzymes}}}}}$

✏$\large{\purple{\rm{Ptyalin}}}$ (In mouth)- Ptyalin is an enzyme released by the Salivary glands. These glands release saliva containing water, lysozyme, ptyalin and mucous. The food enters the buccal cavity and mixed with saliva with the helps of tongue. The food with saliva is called bolus. The ptyalin helps in the partial digestion of carbohydrates (starch) into maltose.

$\large{ \rm{starch \: \: \normalsize{ \red{\underrightarrow{ptyalin}} \: \large{ \: maltose }}}}$

The carbohydrates is partially digested in mouth, later in the alimentary canal, in the Small intestine it is further digested into glucose(simplest form).

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✏$\large{\purple{\rm{Pepsin}}}$ (In stomach) - It is an enzyme which helps in the digestion of protein. It is the strongest Endopeptidase(protein digesting enzyme). It is activated in acidic medium, thus the inner lining of stomach contains HCl and mucous. The HCl activates Pepsinogen and kills the germs. The mucous saves the stomach from acid. So, the protein digestion starts from the stomach.

$\large{ \rm{proteins \: \: \normalsize{ \red{\underrightarrow{pepsin}} \: \: \large{peptones + proteoses + peptides}}}}$

Further the food moves from stomach to intestine, where liver and pancreas also releases their secretions for further digestion of food.

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✏$\large{\purple{\rm{Rennin}}}$(In stomach) - The Rennin is a enzyme which is active only in the childhood stage. In adults, it is inactive. It converts milk into curd like substance and digests it. This is known as Curdling of milk. It acts same as Milk protein Casein. In the presence of HCl, the protein in is converted into rennin (in child only).

$\large{ \rm{casein \: \: { \normalsize{ \red{ \underrightarrow {rennin}} \: \: \large{paracasein}}}}}$

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