Find out the wrongly matched pair.

Options

A. Secondary metabolite - Anthocyanin
B. Protein - lnsulin
C. Chitin - polysaccharide
D. Cellulose - Heteropolymer

Answer

To solve the question of finding the wrongly matched pair, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Option A: Secondary metabolite - Anthocyanin**
- Anthocyanins are pigments that belong to a class of compounds known as flavonoids. They are indeed classified as secondary metabolites because they are not directly involved in the growth, development, or reproduction of the organism but play roles in pigmentation, UV protection, and antioxidant activity.
- **Conclusion**: This pair is correctly matched.

2. **Option B: Protein - Insulin**
- Insulin is a peptide hormone produced by the pancreas and is composed of amino acids, which makes it a protein. It plays a crucial role in regulating glucose levels in the blood.
- **Conclusion**: This pair is correctly matched.

3. **Option C: Chitin - Polysaccharide**
- Chitin is a long-chain polymer of N-acetylglucosamine, which is a type of carbohydrate. It is indeed a polysaccharide and is found in the exoskeletons of arthropods and the cell walls of fungi.
- **Conclusion**: This pair is correctly matched.

4. **Option D: Cellulose - Heteropolymer**
- Cellulose is a polysaccharide that consists of long chains of glucose units linked by beta-1,4-glycosidic bonds. It is classified as a homopolymer because it is made up of only one type of monosaccharide (glucose). A heteropolymer, on the other hand, would consist of two or more different types of monomers.
- **Conclusion**: This pair is incorrectly matched because cellulose is a homopolymer, not a heteropolymer.

### Final Answer:
The wrongly matched pair is **D: Cellulose - Heteropolymer**.

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