Which of the following is polymerised to form proteins?

Options

A. proteins
B. carbohydrates
C. amino acids
D. muramic acid

Answer

To solve the question "Which of the following is polymerised to form proteins?" we need to analyze the options provided: proteins, carbohydrates, amino acids, and muramic acids.

### Step-by-Step Solution:

1. **Understanding Proteins**:
- Proteins are large biomolecules, also known as macromolecules, that play crucial roles in the body. They are essential for various functions including building tissues, enzymes, and hormones.

2. **Identifying the Building Blocks of Proteins**:
- The basic units that make up proteins are called amino acids. There are 20 different amino acids that can combine in various ways to form a wide variety of proteins.

3. **Polymerization Process**:
- Amino acids undergo a process called polymerization, where they link together through peptide bonds to form long chains known as polypeptides. These polypeptides then fold into specific shapes to become functional proteins.

4. **Evaluating the Options**:
- **Proteins**: This option is incorrect because proteins are not polymerized from themselves; they are the end product of polymerization.
- **Carbohydrates**: This option is also incorrect as carbohydrates are a different class of biomolecules, composed of monosaccharides, not amino acids.
- **Amino Acids**: This is the correct option because amino acids are the monomers that polymerize to form proteins.
- **Muramic Acids**: This option is incorrect as muramic acid is an amino sugar and a component of bacterial cell walls, not directly involved in protein synthesis.

5. **Conclusion**:
- The correct answer is **Amino Acids** (Option C), as they are the monomers that polymerize to form proteins.

### Final Answer:
The correct option is **C. Amino Acids**.