Which one of the following statements about carbohydrates is wrong ?

Options

A. Cellulose is a polysaccharide
B. Uracil is a pyrimidine
C. Gylcine is a sulphur containing amino acid
D. Sucrose is a disaccharide

Explanation

To determine which statement about carbohydrates is wrong, we will analyze each option provided in the question.

### Step 1: Analyze the first statement
**Statement:** Cellulose is a polysaccharide.
**Analysis:** Cellulose is indeed a polysaccharide composed of many glucose units linked together. It serves as a structural component in the cell walls of plants. Therefore, this statement is **correct**.

### Step 2: Analyze the second statement
**Statement:** Uracil is a pyrimidine.
**Analysis:** Uracil is one of the nitrogenous bases and is classified as a pyrimidine. Pyrimidines have a single-ring structure, and uracil is one of the three pyrimidines (along with cytosine and thymine). Thus, this statement is also **correct**.

### Step 3: Analyze the third statement
**Statement:** Glycine is a sulfur-containing amino acid.
**Analysis:** Glycine is the simplest amino acid and does not contain sulfur. It has a hydrogen atom as its side chain (R group), making it non-sulfur containing. In contrast, sulfur-containing amino acids include methionine and cysteine. Therefore, this statement is **wrong**.

### Step 4: Analyze the fourth statement
**Statement:** Sucrose is a disaccharide.
**Analysis:** Sucrose is indeed a disaccharide formed from one glucose molecule and one fructose molecule. This statement is **correct**.

### Conclusion
The only wrong statement among the options provided is the third statement: "Glycine is a sulfur-containing amino acid."

Thus, the answer to the question is that the wrong statement about carbohydrates is:

**Answer:** Glycine is a sulfur-containing amino acid (Option 3).

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