Which is wrong

Options

A. Uracil is pyrimidine
B. Glycine contains sulphur
C. Sucrose is disaccharide
D. Cellulose is polysaccharide.

Answer

To determine which option is incorrect, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Option 1: Uracil is a pyrimidine.**
- **Analysis:** Uracil is indeed a nitrogenous base that belongs to the pyrimidine family. Pyrimidines include cytosine, thymine, and uracil. Therefore, this statement is **correct**.

2. **Option 2: Glycine contains sulfur.**
- **Analysis:** Glycine is the simplest amino acid with the chemical formula NH2CH2COOH. It contains two hydrogen atoms, one carboxyl group (-COOH), and one amine group (-NH2). There is no sulfur in its structure. Therefore, this statement is **incorrect**.

3. **Option 3: Sucrose is a disaccharide.**
- **Analysis:** Sucrose is a carbohydrate composed of two monosaccharides: glucose and fructose. It is classified as a disaccharide. Therefore, this statement is **correct**.

4. **Option 4: Cellulose is a polysaccharide.**
- **Analysis:** Cellulose is a complex carbohydrate made up of long chains of glucose units. It is indeed classified as a polysaccharide. Therefore, this statement is **correct**.

### Conclusion:
Based on the analysis, the incorrect statement is **Option 2: Glycine contains sulfur**.