Which of the following statements is incorrect ?

Options

A. Insulin increases cellular uptake of glucose
B. Insulin decreases fat synthesis
C. Insulin increases synthesis of proteins
D. Insulin promotes glycogenesis in liver

Answer

To determine which statement is incorrect regarding insulin and its functions, let’s analyze each statement step by step:

1. **Understanding Insulin's Role**:
- Insulin is a hormone produced by the beta cells of the pancreas. Its primary function is to regulate blood glucose levels.

2. **Statement Analysis**:
- **Statement 1**: "Insulin increases the cellular uptake of glucose."
- This statement is correct. Insulin facilitates the uptake of glucose by cells, allowing them to use glucose for energy or store it as glycogen.

- **Statement 2**: "Insulin decreases the fat synthesis."
- This statement is incorrect. Insulin actually promotes fat synthesis by inhibiting the breakdown of fat in adipose tissue. It encourages the storage of fats rather than their breakdown.

- **Statement 3**: "Insulin increases the synthesis of protein."
- This statement is correct. Insulin promotes protein synthesis by activating various translational factors that help in the formation of proteins.

- **Statement 4**: "Insulin promotes glycogenesis in the liver."
- This statement is also correct. Insulin stimulates the conversion of glucose to glycogen for storage in the liver, a process known as glycogenesis.

3. **Conclusion**:
- The only incorrect statement among the options provided is Statement 2: "Insulin decreases the fat synthesis."

### Final Answer:
The incorrect statement is: **"Insulin decreases the fat synthesis."**