Which of the following is not a component of pancreatic juice?

Options

A. Enterokinase
B. Nucleases
C. Trypsinogen
D. Amylase

Answer

To determine which of the following is not a component of pancreatic juice, we need to analyze each option provided:

1. **Understanding Pancreatic Juice**:
- Pancreatic juice is a digestive fluid produced by the pancreas. It contains various enzymes that aid in the digestion of carbohydrates, proteins, and fats.

2. **Analyzing the Options**:
- **Enterokinase**: This enzyme is secreted by the mucosa of the small intestine, not the pancreas. Its primary role is to activate trypsinogen into trypsin, which is crucial for protein digestion.
- **Nucleases**: These are enzymes that break down nucleic acids (DNA and RNA) and are indeed components of pancreatic juice.
- **Trypsinogen**: This is an inactive precursor of trypsin, a proteolytic enzyme, and is produced by the pancreas. It is a component of pancreatic juice.
- **Amylase**: This enzyme helps in the digestion of carbohydrates and is also a component of pancreatic juice.

3. **Conclusion**:
- Among the options, enterokinase is the only one that is not a component of pancreatic juice. It is secreted by the small intestine, while the other three (nucleases, trypsinogen, and amylase) are produced by the pancreas and are part of pancreatic juice.

**Final Answer**: Enterokinase is not a component of pancreatic juice.

---