ATP breakdown is prerequisite for

Options

A. Oxidoreductases
B. Transferases
C. Hydrolases
D. Ligases

Answer

To solve the question "ATP breakdown is a prerequisite for," we need to analyze the options provided and understand the role of ATP in biochemical processes.

### Step-by-Step Solution:

1. **Understanding ATP**:
- ATP stands for adenosine triphosphate. It consists of an adenosine molecule bonded to three phosphate groups. The breakdown of ATP involves the removal of one or more phosphate groups, which releases energy.

2. **Identifying the Breakdown Process**:
- The breakdown of ATP typically results in the formation of ADP (adenosine diphosphate) and an inorganic phosphate (Pi). This process is crucial for various cellular activities that require energy.

3. **Recognizing the Role of Phosphate**:
- The phosphate groups released during ATP breakdown can be used in phosphorylation reactions. Phosphorylation is the addition of a phosphate group to a molecule, which is essential for many biochemical pathways.

4. **Analyzing the Options**:
- The options given are:
- a) Oxidoreductase
- b) Transferase
- c) Hydrolysis
- d) Ligases
- We need to determine which of these processes requires ATP breakdown.

5. **Understanding Transferase**:
- Transferases are enzymes that catalyze the transfer of a functional group (like a phosphate group) from one molecule to another. In the context of ATP breakdown, transferases utilize the phosphate released from ATP to phosphorylate other molecules.

6. **Conclusion**:
- Since ATP breakdown provides the necessary phosphate for phosphorylation reactions catalyzed by transferases, we conclude that ATP breakdown is a prerequisite for transferase activity.

### Final Answer:
The correct answer is **b) Transferase**.

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