Which of the following is different from other?

Options

A. Gastrin
B. Ptyalin
C. Glucagon
D. Secretin

Answer

To solve the question "Which of the following is different from the other?" we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are gastrin, ptyalin, glucagon, and secretin.

2. **Analyze Gastrin**:
- Gastrin is a hormone.
- It is secreted in the stomach.
- Its main functions include stimulating the secretion of gastric acid (HCl) and mucus.

3. **Analyze Ptyalin**:
- Ptyalin (also known as salivary amylase) is an enzyme.
- It is found in saliva and helps in the digestion of carbohydrates.

4. **Analyze Glucagon**:
- Glucagon is a hormone.
- It is produced by the pancreas and increases blood sugar levels.

5. **Analyze Secretin**:
- Secretin is a hormone.
- It is also produced by the pancreas and stimulates the secretion of digestive fluids.

6. **Compare the Options**:
- Gastrin, glucagon, and secretin are all hormones.
- Ptyalin is an enzyme.

7. **Conclusion**:
- Since ptyalin is the only enzyme among the options while the others are hormones, it is the one that is different from the others.

### Final Answer:
**Ptyalin is different from the other options (gastrin, glucagon, and secretin) because it is an enzyme, while the others are hormones.**

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