Enzymes are biocatalyst of the body which fasten the biochemical reactions and are regulated by various factors. Generally, the majority of the enzymes are apoenzymes which represent the protein part of an enzyme. Which of the following biocatalyst is non - protein in nature ?

Options

A. Ribozyme
B. Pepsin
C. Trypsin
D. All of the above

Answer

To solve the question regarding which biocatalyst is non-protein in nature, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Enzymes**:
- Enzymes are biological catalysts that speed up biochemical reactions. Most enzymes are proteins, specifically referred to as apoenzymes when they are in their inactive form.

2. **Identify the Types of Enzymes**:
- Enzymes can be classified into two main components:
- **Apoenzyme**: The protein part of the enzyme.
- **Cofactor**: Non-protein molecules that assist in enzyme activity.

3. **Examine the Options Provided**:
- The options given are:
- A) Ribozyme
- B) Pepsin
- C) Trypsin
- D) All of the above

4. **Analyze Each Option**:
- **Pepsin**: This is a digestive enzyme that breaks down proteins in the stomach. It is a protein, thus it is an apoenzyme.
- **Trypsin**: Similar to pepsin, trypsin is also a digestive enzyme that is proteinaceous in nature.
- **Ribozyme**: Unlike pepsin and trypsin, ribozymes are RNA molecules that can catalyze biochemical reactions. They are not proteins but are instead nucleic acids.

5. **Determine the Non-Protein Biocatalyst**:
- Since both pepsin and trypsin are proteins, the only non-protein biocatalyst among the options is ribozyme.

6. **Conclude the Answer**:
- Therefore, the answer to the question is **A) Ribozyme**.