Insulin produced by endocrine cells of pancreas, causes all except

Options

A. Enhanced glucose uptake by the cells
B. Enhanced glycogenesis in liver and muscles
C. Enhanced amino acid uptake and 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, let's break down the options provided and analyze each one step by step.

### Step 1: Understand the role of insulin
Insulin is a hormone secreted by the beta cells of the pancreas, specifically from the islets of Langerhans. It plays a crucial role in regulating glucose levels in the blood and has various anabolic effects on the body.

### Step 2: Analyze the options
1. **Enhanced glucose uptake by the cells**: Insulin promotes the uptake of glucose by cells, especially muscle and fat cells. This statement is true.

2. **Enhanced glycogenesis in liver and muscles**: Insulin stimulates the conversion of glucose to glycogen (glycogenesis) in the liver and muscle tissues. This statement is also true.

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.

4. **Enhanced fat utilization for energy production**: Insulin does not promote the breakdown of fats for energy; instead, it encourages fat storage and synthesis. This statement is false.

### Step 3: Conclusion
Based on the analysis, the correct answer to the question "Insulin produced by endocrine cells of pancreas causes all except" is option 4: **Enhanced fat utilization for energy production**.