Which hormone promotes cell division, protein synthesis and bones growth ?

Options

A. PTH
B. ADH
C. GH
D. ACTH

Answer

To solve the question "Which hormone promotes cell division, protein synthesis, and bone growth?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Functions Required**: The question specifies three functions: cell division, protein synthesis, and bone growth. We need to find a hormone that is associated with all these functions.

2. **Review the Options**: The options given are:
- PTH (Parathyroid Hormone)
- ADH (Antidiuretic Hormone)
- GH (Growth Hormone)
- ACTH (Adrenocorticotropic Hormone)

3. **Analyze Each Hormone**:
- **PTH (Parathyroid Hormone)**: This hormone primarily regulates calcium levels in the blood and is involved in bone metabolism but does not directly promote cell division or protein synthesis.
- **ADH (Antidiuretic Hormone)**: This hormone is involved in regulating water balance and blood volume, not cell division, protein synthesis, or bone growth.
- **GH (Growth Hormone)**: This hormone is crucial for growth and development. It promotes cell division, stimulates protein synthesis, and supports bone growth.
- **ACTH (Adrenocorticotropic Hormone)**: This hormone stimulates the production of cortisol from the adrenal glands and is not directly involved in the functions mentioned in the question.

4. **Determine the Correct Answer**: Based on the analysis, Growth Hormone (GH) is the only hormone that promotes cell division, protein synthesis, and bone growth.

5. **Conclusion**: Therefore, the correct answer is **GH (Growth Hormone)**.

### Final Answer:
The hormone that promotes cell division, protein synthesis, and bone growth is **Growth Hormone (GH)**.

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