Whichof the following is not a polymer?

Options

A. Sucrose
B. Teflon
C. Starch
D. Enzyme

Answer

To determine which of the following options is not a polymer, we need to understand what a polymer is. A polymer is a large molecule composed of repeating structural units (monomers) connected by covalent chemical bonds.

Let's analyze each option provided:

1. **Sucrose**:
- Sucrose is a disaccharide formed from two monosaccharides: glucose and fructose.
- Since it consists of only two units and does not have a repeating structure, it does not qualify as a polymer.

2. **Teflon**:
- Teflon is a polymer made from the monomer tetrafluoroethylene (CF2=CF2).
- It consists of long chains of repeating units (CF2) and is classified as a polymer.

3. **Starch**:
- Starch is a polysaccharide made up of numerous glucose units linked together.
- It is a polymer because it consists of repeating units of glucose.

4. **Enzymes**:
- Enzymes are biological catalysts that are proteins, and proteins are polymers made from amino acids.
- Since enzymes are composed of repeating units of amino acids, they are also classified as polymers.

Based on this analysis, the only option that is not a polymer is **sucrose**.

### Final Answer:
**Sucrose is not a polymer.**