Which does not occur in pancreatic juice ?

Options

A. Pepsinogen
B. Trypsinogen
C. Chymotrypsin
D. Lipase

Answer

To solve the question "Which does not occur in pancreatic juice?" we can follow these steps:

### Step 1: Understand the Components of Pancreatic Juice
Pancreatic juice is a digestive fluid secreted by the pancreas. It contains several important enzymes that aid in digestion.

### Step 2: Identify the Enzymes Present in Pancreatic Juice
The main enzymes found in pancreatic juice include:
- **Trypsinogen**: An inactive precursor of trypsin, which digests proteins.
- **Chymotrypsinogen**: An inactive precursor of chymotrypsin, which also digests proteins.
- **Carboxypeptidase**: An enzyme that helps in protein digestion.
- **Lipase**: An enzyme that digests fats.
- **Nucleases**: Enzymes that digest nucleic acids.

### Step 3: Analyze the Options Given
The options provided are:
1. **Pepsinogen**
2. **Trypsinogen**
3. **Chymotrypsin**
4. **Lipase**

### Step 4: Determine Which Option is Not Present in Pancreatic Juice
- **Pepsinogen**: This is not found in pancreatic juice; it is a component of gastric juice secreted by the stomach.
- **Trypsinogen**: Present in pancreatic juice.
- **Chymotrypsin**: Present in pancreatic juice.
- **Lipase**: Present in pancreatic juice.

### Step 5: Conclusion
The enzyme that does not occur in pancreatic juice is **Pepsinogen**.

### Final Answer
**Pepsinogen** does not occur in pancreatic juice.

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