Enzymes which are associated with the forma tion of new bonds using energy from ATP hydrolysis are

Options

A. Lyases
B. Ligases
C. Kinases
D. Reductases

Answer

To solve the question regarding the enzymes associated with the formation of new bonds using energy from ATP hydrolysis, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for enzymes that facilitate the formation of new bonds using energy derived from ATP hydrolysis.

2. **Analyze the Options**: The options provided are:
- A) Liases
- B) Ligases
- C) Kinases
- D) Reductases

3. **Evaluate Each Option**:
- **Liases**: These enzymes are involved in the non-hydrolytic removal of groups from substrates or the addition of groups to substrates. They do not utilize ATP hydrolysis for bond formation, so they are not the correct option.

- **Kinases**: Kinases are transferases that transfer specific groups (like phosphate groups) from one molecule to another. While they do involve ATP, their primary function is not the formation of new bonds but rather the transfer of groups. Thus, they are not the correct option.

- **Reductases**: These enzymes are involved in oxidation-reduction reactions and transfer hydrogen or electrons between substrates. They do not primarily focus on forming new bonds using ATP hydrolysis, making them an incorrect choice.

- **Ligases**: Ligases are enzymes that catalyze the joining of two molecules, which is coupled with the hydrolysis of the diphosphate bond in ATP or a similar triphosphate. They are specifically involved in forming new bonds, making them the correct answer.

4. **Conclusion**: Based on the analysis, the correct answer to the question is **B) Ligases**.

### Final Answer:
The enzymes associated with the formation of new bonds using energy from ATP hydrolysis are **Ligases**.

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