The reason why both trypsin and pepsin are first secreted in the stomach and then in the small intestine is because they have different optimal pH levels for their activity.

Pepsin is an enzyme that works best in an acidic environment, specifically in the stomach where the pH is low. It is secreted by the gastric glands in the stomach lining. Pepsin breaks down proteins into smaller peptides.

On the other hand, trypsin is an enzyme that works best in a slightly alkaline environment, specifically in the small intestine where the pH is higher. It is secreted by the pancreas into the small intestine. Trypsin further breaks down the peptides into individual amino acids.

So, the sequential secretion of pepsin in the stomach and trypsin in the small intestine allows for the optimal conditions for each enzyme to function effectively. This two-step process ensures that proteins are efficiently broken down into amino acids for absorption in the small intestine.

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The reason why both trypsin and pepsin are first secreted in the stomach and then in the small intestine is because they have different optimal pH levels for their activity.

Pepsin is an enzyme that works best in an acidic environment, specifically in the stomach where the pH is low. It is secreted by the gastric glands in the stomach lining. Pepsin breaks down proteins into smaller peptides.

On the other hand, trypsin is an enzyme that works best in a slightly alkaline environment, specifically in the small intestine where the pH is higher. It is secreted by the pancreas into the small intestine. Trypsin further breaks down the peptides into individual amino acids.

So, the sequential secretion of pepsin in the stomach and trypsin in the small intestine allows for the optimal conditions for each enzyme to function effectively. This two-step process ensures that proteins are efficiently broken down into amino acids for absorption in the small intestine.

Knowee AI · Accepted Answer

The reason why both trypsin and pepsin are first secreted in the stomach and then in the small intestine is because they have different optimal pH levels for their activity.

Pepsin is an enzyme that works best in an acidic environment, specifically in the stomach where the pH is low. It is secreted by the gastric glands in the stomach lining. Pepsin breaks down proteins into smaller peptides.

On the other hand, trypsin is an enzyme that works best in a slightly alkaline environment, specifically in the small intestine where the pH is higher. It is secreted by the pancreas into the small intestine. Trypsin further breaks down the peptides into individual amino acids.

So, the sequential secretion of pepsin in the stomach and trypsin in the small intestine allows for the optimal conditions for each enzyme to function effectively. This two-step process ensures that proteins are efficiently broken down into amino acids for absorption in the small intestine.

DOUBT - When the work of both trypsin and Pepsin is same which is to convert protein to amino acids then why it's first secreted in stomach then in small intestine . why not only once ?

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