Which of the following is an amino acid derived hormone ?

Options

A. Estriol
B. Estradiol
C. Ecdysone
D. Epinephrine

Answer

To determine which of the following is an amino acid-derived hormone, we can follow these steps:

### Step 1: Understand Hormone Classification
Hormones can be classified based on their chemical structure. The main categories include:
- **Lipid-derived hormones**: These are derived from lipids (fats).
- **Amino acid-derived hormones**: These are derived from amino acids.
- **Peptide hormones**: These are formed from chains of amino acids.

### Step 2: Identify Examples of Amino Acid-Derived Hormones
Amino acid-derived hormones are typically derived from specific amino acids. Notable examples include:
- **Epinephrine** (also known as adrenaline)
- **Norepinephrine** (also known as noradrenaline)

Both of these hormones are secreted by the adrenal medulla and are derived from the amino acid **tyrosine**.

### Step 3: Analyze the Options
If the question provides specific options, we would need to identify which one of them is an amino acid-derived hormone. Based on the information provided:
- **Epinephrine** is derived from tyrosine and is an amino acid-derived hormone.
- **Norepinephrine** is also derived from tyrosine and is another example of an amino acid-derived hormone.

### Step 4: Conclusion
From the analysis, if **epinephrine** is one of the options given, it is indeed an amino acid-derived hormone.

### Final Answer
**Epinephrine** is an amino acid-derived hormone.

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