Insulin produced by endocrine cells of pancreas, causes all except

Options

A. Enhanced gluocose uptake by the cells
B. Enhanced glycogenesis in liver and muscles
C. Enhanced amino acid uptake an protein synthesis
D. Enhanced fat utilization for energy production

Answer

To solve the question regarding the effects of insulin produced by the endocrine cells of the pancreas, we will analyze each option provided and determine which one does not align with the known functions of insulin.

### Step-by-Step Solution:

1. **Understand the Role of Insulin:**
Insulin is a hormone produced by the beta cells of the pancreas. Its primary function is to lower blood glucose levels by facilitating the uptake of glucose into cells and promoting its storage.

2. **Evaluate Each Option:**
- **Option 1: Enhanced glucose uptake by the cell.**
- Insulin promotes the uptake of glucose by cells, particularly in muscle and fat tissues. This statement is true.

- **Option 2: Enhanced Glycogenesis in liver and muscles.**
- Glycogenesis is the process of converting glucose into glycogen for storage, which is stimulated by insulin. This statement is also true.

- **Option 3: Enhanced amino acid uptake and protein synthesis.**
- Insulin facilitates the uptake of amino acids into cells and promotes protein synthesis. This statement is true as well.

- **Option 4: Enhanced fat utilization for energy production.**
- Insulin primarily promotes the storage of fats and inhibits fat breakdown (lipolysis). It does not enhance fat utilization for energy production; rather, it favors glucose utilization. This statement is false.

3. **Identify the Exception:**
- Based on the analysis, the fourth option is the only one that does not align with the functions of insulin. Therefore, the correct answer to the question is that insulin does not enhance fat utilization for energy production.

### Final Answer:
The correct option that insulin does not cause is **Enhanced fat utilization for energy production**.

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