Which of the following is an amine hormone ?

Options

A. Progesterone
B. Thyroxine
C. Oxypurin
D. Insulin

Answer

To determine which of the following is an amine hormone, we need to analyze the options provided: progesterone, thyroxine, oxypurine, and insulin.

### Step-by-Step Solution:

1. **Understand the Types of Hormones**:
- Hormones can be classified into three main types based on their chemical structure: peptide hormones, steroid hormones, and amine hormones.
- Peptide hormones are made up of amino acids and are generally inactive when released.
- Steroid hormones are derived from lipids and can cross the plasma membrane.
- Amine hormones are derived from amino acids.

2. **Identify the Precursor of Amine Hormones**:
- Amine hormones are primarily derived from the amino acid tyrosine or tryptophan.
- Common examples of amine hormones include catecholamines (like epinephrine and norepinephrine) and thyroid hormones (like thyroxine).

3. **Analyze Each Option**:
- **Progesterone**: This is a steroid hormone, not an amine hormone.
- **Thyroxine**: This is derived from the amino acid tyrosine and is classified as an amine hormone.
- **Oxypurine**: This is not a commonly recognized hormone and is likely a peptide hormone.
- **Insulin**: This is a peptide hormone, derived from a chain of amino acids.

4. **Conclusion**:
- Among the options provided, the only amine hormone is **thyroxine**.

### Final Answer:
The amine hormone from the options given is **thyroxine**.

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