The amino acid which gives rise to thyroxine is:

Options

A. Glycine
B. Alamine
C. Tyrosine
D. Tryptophan

Answer

To determine the amino acid that gives rise to thyroxine, we can follow these steps:

### Step 1: Understand what thyroxine is
Thyroxine is a hormone produced by the thyroid gland. It plays a crucial role in regulating metabolism, growth, and development in the body.

**Hint:** Remember that thyroxine is a hormone related to metabolism and growth.

### Step 2: Identify the precursor of thyroxine
Thyroxine is synthesized from amino acids. The specific amino acid that is a precursor to thyroxine is important for understanding its formation.

**Hint:** Think about which amino acids are involved in hormone production.

### Step 3: Recall the relevant amino acids
Among the common amino acids, we need to identify which one is specifically related to the production of thyroxine. The options include glycine, alanine, tyrosine, and tryptophan.

**Hint:** Focus on the amino acids that are known to be involved in the synthesis of hormones.

### Step 4: Identify the correct amino acid
The amino acid that is specifically known to give rise to thyroxine is tyrosine. It is converted into thyroxine through a series of biochemical reactions in the thyroid gland.

**Hint:** Tyrosine is often associated with thyroid hormones, so keep that in mind.

### Step 5: Conclude the answer
Based on the information gathered, the amino acid that gives rise to thyroxine is **tyrosine**.

**Final Answer:** The amino acid which gives rise to thyroxine is **tyrosine**.

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