The enzyme that is not present in succus entericus is

Options

A. Nucleosidase
B. Lipase
C. Maltase
D. Nuclease

Answer

To solve the question regarding which enzyme is not present in succus entericus, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Succus Entericus**:
- Succus entericus refers to the intestinal juice secreted by the small intestine. It contains various enzymes that aid in digestion.

2. **Identifying the Enzymes Present in Succus Entericus**:
- The enzymes typically found in succus entericus include:
- **Nucleosidase**: Breaks down nucleotides into nitrogenous bases and sugars.
- **Lipase**: Breaks down fats (triglycerides) into monoglycerides and free fatty acids.
- **Disaccharidases**: Such as maltase, sucrase, and lactase, which convert disaccharides into monosaccharides (like glucose).

3. **Analyzing the Options**:
- The question provides options, and we need to determine which enzyme is not part of succus entericus.
- **Nucleosidase**: Present in succus entericus.
- **Lipase**: Present in succus entericus.
- **Disaccharidases**: Present in succus entericus.
- **Nuclease**: This enzyme is not part of succus entericus; it is found in pancreatic juice and is responsible for digesting nucleic acids.

4. **Conclusion**:
- Based on the analysis, the enzyme that is not present in succus entericus is **Nuclease**.

### Final Answer:
The enzyme that is not present in succus entericus is **Nuclease**.