Which of the following hormones is a derivative of amino acid

Options

A. Epinephrine
B. Progesterone
C. Prostaglandin
D. Oestrogen

Explanation

To determine which hormone is a derivative of an amino acid, follow these steps:

### Step 1: Understand the Classification of Hormones
Hormones can be classified into four main types based on their chemical nature:
1. **Peptide Hormones**: These are made up of amino acids and include hormones like insulin and glucagon.
2. **Steroidal Hormones**: These are derived from cholesterol and include hormones like cortisol, testosterone, estrogen, and progesterone.
3. **Iodothyronines**: These hormones are derived from the amino acid tyrosine and include thyroxine (T3 and T4) produced by the thyroid gland.
4. **Amino Acid Derivatives**: These hormones are directly derived from amino acids.

### Step 2: Identify Amino Acid Derivative Hormones
Among the hormones classified as amino acid derivatives, the most notable examples include:
- **Epinephrine (Adrenaline)**: Derived from the amino acid tyrosine.
- **Norepinephrine**: Also derived from tyrosine.

### Step 3: Analyze the Given Options
In the question, we need to identify which hormone is a derivative of an amino acid. The options provided include:
- **Epinephrine**
- **Progesterone**
- **Prostaglandins**
- **Estrogens**

### Step 4: Evaluate Each Option
- **Epinephrine**: This is an amino acid derivative, specifically derived from tyrosine.
- **Progesterone**: This is a steroid hormone, not an amino acid derivative.
- **Prostaglandins**: These are lipid compounds and not derived from amino acids.
- **Estrogens**: These are also steroid hormones, not derived from amino acids.

### Step 5: Conclusion
The hormone that is a derivative of an amino acid is **Epinephrine**. Therefore, the correct answer is option number one.

### Final Answer
**Epinephrine is the hormone that is a derivative of an amino acid.**

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