Which represents action of insulin

Options

A. Increases blood glucose level by stimulating glucagon production.
B. Decreases blood glucose level by forming glycogen.
C. Increases blood glucose level promoting cellular uptake of glucose.
D. Increases blood glucose level by hydrolysis of glycogen.

Answer

To solve the question "Which represents the action of insulin?", we need to analyze the options provided and understand the role of insulin in glucose metabolism.

### Step-by-Step Solution:

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

2. **Evaluate Each Option**:
- **Option 1**: "Increases blood glucose level by stimulating the glucagon production."
- This is incorrect because insulin does not increase blood glucose; it decreases it.

- **Option 2**: "Decreases the blood glucose level by forming glycogen."
- This is correct. Insulin promotes the conversion of glucose to glycogen (glycogenesis), thereby lowering blood glucose levels.

- **Option 3**: "Increases the blood glucose level promoting the cellular uptake of glucose."
- This is incorrect. While insulin does promote cellular uptake of glucose, it does not increase blood glucose levels; it decreases them.

- **Option 4**: "Increases the blood glucose level by hydrolysis of glycogen."
- This is also incorrect. Hydrolysis of glycogen (glycogenolysis) would release glucose into the bloodstream, which is contrary to insulin's action.

3. **Conclusion**: Based on the analysis, the only option that accurately represents the action of insulin is **Option 2**: "Decreases the blood glucose level by forming glycogen."

### Final Answer:
The correct answer is **Option 2**: Decreases the blood glucose level by forming glycogen.