Most simple amino acid is

Options

A. tyrosine
B. Lysine
C. Glycine
D. Aspartic acid

Answer

**Step-by-Step Solution:**

1. **Understanding Amino Acids**: Amino acids are organic compounds that serve as the building blocks of proteins. Each amino acid has a basic structure that includes an amino group (NH2), a carboxyl group (COOH), a hydrogen atom (H), and a variable side chain (R group).

2. **Identifying the Simplest Amino Acid**: The simplest amino acid is defined by its structure. It has the least complex side chain. Among all amino acids, glycine is recognized as the simplest because its side chain is just a hydrogen atom (H).

3. **Structure of Glycine**: The structure of glycine can be represented as:
- Amino group (NH2)
- Carboxyl group (COOH)
- A hydrogen atom as the side chain (R group)
This can be summarized as:
- NH2 - CH2 - COOH

4. **Historical Context**: Glycine was one of the first amino acids to be identified and was isolated from gelatin in the early 19th century (around 1820). It is also known for its sweet taste, which is why it is sometimes referred to as "sugar."

5. **Conclusion**: Based on the structure and historical significance, glycine is confirmed as the most simple amino acid.

**Final Answer**: The most simple amino acid is Glycine.

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