Choose the wrong statement:

Options

A. Lipases and nucleases are not present in pancreatic juice
B. Goblet cells secrete mucus
C. Brunner's glands are sub mucosal glands
D. Carboxypeptidase catalyses conversion of proteins, peptones and proteases to dipeptides

Answer

To solve the question of identifying the incorrect statement regarding digestion and absorption, we will analyze each statement provided.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- Statement: "Lipase and nucleases are not present in pancreatic juice."
- **Evaluation:** This statement is incorrect. Pancreatic juice contains several enzymes, including lipases (which digest fats) and nucleases (which digest nucleic acids). Therefore, this statement is false.

2. **Analyze the Second Statement:**
- Statement: "Goblet cells secrete mucus."
- **Evaluation:** This statement is correct. Goblet cells are specialized epithelial cells found in the intestinal mucosa, and their primary function is to secrete mucus, which lubricates and protects the intestinal lining.

3. **Analyze the Third Statement:**
- Statement: "Brunner's gland is a mucosal gland."
- **Evaluation:** This statement is also correct. Brunner's glands are located in the duodenum and secrete mucin, which helps protect the intestinal mucosa from the acidic chyme coming from the stomach.

4. **Analyze the Fourth Statement:**
- Statement: "Carboxypeptidase catalyzes the conversion of protein."
- **Evaluation:** This statement is correct. Carboxypeptidase is an enzyme that helps in the digestion of proteins by breaking them down into smaller peptides and amino acids. It is secreted in an inactive form (procarboxypeptidase) and is activated by trypsin.

### Conclusion:
Based on the evaluations, the incorrect statement is the **first statement**: "Lipase and nucleases are not present in pancreatic juice."

### Final Answer:
The wrong statement is **Option A**: "Lipase and nucleases are not present in pancreatic juice."

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