Enzyme absent in pancreatic juice is

Options

A. Amylase
B. Chymotrypsinogen
C. Lipase
D. Enterokinse

Answer

To determine the enzyme that is absent in pancreatic juice, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Pancreatic Juice Composition**:
- Pancreatic juice is secreted by the pancreas and contains several enzymes that aid in digestion.

2. **Identify Key Enzymes Present in Pancreatic Juice**:
- The main enzymes found in pancreatic juice include:
- **Pancreatic Amylase**: Digests starch into maltose.
- **Chymotrypsinogen**: An inactive form of chymotrypsin, which digests proteins.
- **Procarboxypeptidase**: An inactive form that gets converted to carboxypeptidase, also involved in protein digestion.
- **Pancreatic Lipase**: Digests fats after emulsification.

3. **Recognize Enzymes Not Found in Pancreatic Juice**:
- While pancreatic juice contains various enzymes, it does not contain **Enterokinase**. Enterokinase is secreted by the small intestine and is responsible for activating trypsinogen into trypsin.

4. **Conclusion**:
- Since enterokinase is secreted by the small intestine and not by the pancreas, it is the enzyme that is absent in pancreatic juice.

### Final Answer:
The enzyme absent in pancreatic juice is **Enterokinase**.

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