Identify the statement which is incorrect

Options

A. Sulphur is an integral part of cysteine
B. Glycine is an example of lipids
C. Lecithin contains phosphorus atom in its structure
D. Tyrosine possesses aromatic ring in its structure

Answer

To solve the question of identifying the incorrect statement, we will analyze each of the four statements provided:

1. **Statement 1**: "Sulphur is an integral part of cysteine."
- **Analysis**: Cysteine is indeed an amino acid that contains sulfur in its structure. This statement is correct.

2. **Statement 2**: "Glycine is an example of lipids."
- **Analysis**: Glycine is not a lipid; it is an amino acid. Lipids are generally water-insoluble molecules, while glycine is soluble in water and is involved in protein synthesis. Therefore, this statement is incorrect.

3. **Statement 3**: "Lysithin contains phosphorous atom in its structure."
- **Analysis**: Lysithin (more commonly spelled as lecithin) is a type of phospholipid that contains phosphorus in its structure. This statement is correct.

4. **Statement 4**: "Tyrosine possesses aromatic ring in its structure."
- **Analysis**: Tyrosine is an amino acid that does possess an aromatic ring in its structure. This statement is also correct.

**Conclusion**: The incorrect statement is the second one: "Glycine is an example of lipids."