Pancreatic juice takes part in digestion of

Options

A. Proteins, carbohydrates and fats
B. Proteins and fats only
C. Protein, carbohydrate
D. Proteins only

Answer

**Step-by-Step Solution:**

1. **Understanding Pancreatic Juice**:
- Pancreatic juice is a digestive fluid produced by the pancreas, which is a mixed gland that performs both endocrine and exocrine functions.

2. **Components of Pancreatic Juice**:
- It contains several digestive enzymes that are crucial for the digestion of different macromolecules:
- **Proteolytic Enzymes**: Such as trypsinogen and chymotrypsinogen, which are involved in the digestion of proteins.
- **Amylases**: These enzymes break down carbohydrates, specifically starch.
- **Lipases**: These enzymes are responsible for the digestion of fats.
- **Nucleases**: These enzymes work on nucleic acids, breaking them down into nucleotides.

3. **Activation of Enzymes**:
- The enzymes in pancreatic juice are initially secreted in inactive forms. For example, trypsinogen is activated to trypsin by the enzyme enterokinase, which then activates other enzymes.

4. **Role of Pancreatic Juice in Digestion**:
- Given the presence of enzymes that digest proteins, carbohydrates, and fats, pancreatic juice plays a significant role in the digestion of all three macromolecules.

5. **Conclusion**:
- Therefore, the correct answer to the question "Pancreatic juice takes part in digestion of" is **proteins, carbohydrates, and fats**.