which amino acid is nonessential for human body ?

Options

A. Glycine
B. phhenyl alannine
C. Arginine
D. Methionine

Answer

To determine which amino acid is non-essential for the human body, we need to understand the classification of amino acids. Here's a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Understand Amino Acids**: Amino acids are the building blocks of proteins. They play a crucial role in various biological processes.

2. **Classification of Amino Acids**: Amino acids are categorized into two groups:
- **Essential Amino Acids**: These cannot be synthesized by the human body and must be obtained through diet.
- **Non-Essential Amino Acids**: These can be synthesized by the body and do not need to be obtained from food.

3. **Identify Essential Amino Acids**: Some examples of essential amino acids include:
- Histidine
- Leucine
- Lysine
- Tryptophan
- Methionine (noted as essential in the video)

4. **Identify Non-Essential Amino Acids**: Examples of non-essential amino acids include:
- Alanine
- Arginine
- Glutamine
- Proline
- Serine
- Glycine

5. **Evaluate the Options Given**: The options provided in the question were:
- Glycine
- Phenylalanine
- Arginine
- Methionine

6. **Determine the Non-Essential Amino Acid**:
- **Glycine**: Non-essential
- **Phenylalanine**: Essential
- **Arginine**: Non-essential
- **Methionine**: Essential

7. **Conclusion**: Among the options, **Arginine** is identified as a non-essential amino acid.

### Final Answer:
The non-essential amino acid from the given options is **Arginine**.

---