Q: Which enzyme breaks down protein in the stomach?
ANS:
- Pepsin is an enzyme which breaks down protein in the stomach.
- It is produced and secreted by the chief cells in the stomach lining as an inactive form called pepsinogen.
- Pepsinogen is activated by the low PH of about 1.5-2.0, to its active form,
- Pepsin primarily acts on proteins and peptides which are rich in amino acids For example, phenylalanine and tyrosine.
| Enzyme | Pepsin |
| Location | Stomach |
| Function | Breaks down proteins into smaller peptide fragments |
| Optimal pH | Around pH 1.5-2.0 (acidic environment of the stomach) |
| Optimal Temperature | Around 37°C (body temperature) |
| Products | Smaller peptide fragments |
| Significance | Essential for protein digestion in the stomach |
| Associated Organs | Stomach |
| Other Actions | Activates other pepsinogen molecules and contributes to the autocatalytic process |
| Deficiency | Pepsin deficiency is rare, but it can lead to impaired protein digestion and malabsorption |
Important Questions about Enzymes
- Enzymes MCQs
- Inhibition in enzymes
- Which enzyme digests starch?
- Which enzyme digests protein?
- which enzyme is present in saliva?
- Which enzyme is not present in succus entericus?
- Which enzyme breaks down protein in the stomach?
- Which enzyme converts fibrinogen to fibrin?
- Which enzyme converts glucose into alcohol?
- Which enzyme digests fat?
- Which enzyme digests milk protein?
- Which enzyme is used in PCR?
- Which enzyme unzips the DNA double helix?
- Which liver enzyme increases with alcohol?
- Which enzyme cuts DNA?
- Which enzyme catalyzes the first step of glycolysis?
- Which enzyme binds DNA fragments together?
- Which enzyme transcribes DNA into RNA?
- which enzyme adds new nucleotides?
- Which enzyme digests cellulose?
- Which enzyme separates the two strands of DNA?
- Which enzyme converts carbohydrates into glucose?
- Which enzyme removes RNA primer?
- Which enzymes help in digestion?
- Which enzyme works best in acidic conditions?
- Which enzyme synthesizes tRNA?
- Which enzyme secreted by pancreas?
- Which enzyme converts maltose into glucose?
- Which vitamins work as coenzyme?