Which of the following is incorrect about lisine amino acid

Options

A. It is essential in diet
B. It is a basic amino acid
C. It is not synthesized by our body
D. It forms glycosidic bond with other amino acids

Answer

To determine which statement about the amino acid lysine is incorrect, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Lysine**:
- Lysine is an amino acid that is classified as a basic amino acid due to the presence of an additional amino group in its side chain (R group). This gives lysine its basic properties.

2. **Evaluating the Options**:
- **Option A**: "It is essential in diet."
- This statement is **true**. Lysine is classified as an essential amino acid, meaning that it cannot be synthesized by the human body and must be obtained through diet.

- **Option B**: "It is a basic amino acid."
- This statement is **true**. Lysine is indeed a basic amino acid because of its structure, which includes an extra amino group.

- **Option C**: "It is not synthesized by our body."
- This statement is **true**. As previously mentioned, lysine is an essential amino acid and is not synthesized by the body.

- **Option D**: "It forms glycosidic bonds with other amino acids."
- This statement is **false**. Amino acids, including lysine, form peptide bonds with each other, not glycosidic bonds. Glycosidic bonds are formed between sugars (carbohydrates).

3. **Conclusion**:
- The incorrect statement about lysine is **Option D**: "It forms glycosidic bonds with other amino acids."

### Final Answer:
The incorrect statement about lysine amino acid is **Option D**.

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