Which of the following enzymes is not used for making biological detergent

Options

A. Amylase
B. Cellulase
C. Protease
D. Peptidase

Explanation

To determine which enzyme is not used for making biological detergents, we need to analyze the given options and understand the role of each enzyme in breaking down biological materials. Here’s a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Biological Detergents**:
- Biological detergents contain enzymes that help break down biological materials such as fats, proteins, and carbohydrates. This is important for cleaning purposes.

2. **Analyzing the Options**:
- We need to look at the enzymes provided in the options and see their functions.

3. **Option A: Amylase**:
- Amylase is an enzyme that breaks down starch into sugars. It is effective in breaking down carbohydrates but does not break down proteins or fats. However, it can be used in biological detergents for its ability to break down starch.

4. **Option B: Cellulase**:
- Cellulase is an enzyme that breaks down cellulose, which is a component of plant cell walls. It is useful in biological detergents for breaking down plant materials and is therefore applicable.

5. **Option C: Protease**:
- Protease is an enzyme that breaks down proteins into smaller peptides and amino acids. It is commonly used in biological detergents to remove protein stains, making it a suitable enzyme.

6. **Option D: Peptidase**:
- Peptidase is an enzyme that breaks down peptide bonds between amino acids. Since it cleaves peptide bonds, it is involved in breaking down proteins, which are biological materials. Therefore, it is also used in biological detergents.

7. **Conclusion**:
- Since all of the enzymes mentioned (amylase, cellulase, protease, and peptidase) can be used in biological detergents, we need to identify which one is not suitable. The question asks for the enzyme that does not contribute to breaking down biological materials effectively in the context of detergents.
- The correct answer is **none of the above**, as all the mentioned enzymes are used in biological detergents. However, if we consider the context of the question, it seems to imply that one enzyme is less effective in this role, which leads to a misunderstanding.

### Final Answer:
- The enzyme that is not used for making biological detergents is **none of the above**, as all enzymes listed can be used in some capacity.