Which enzyme helps in transfer of phosphate group from ATP to a carbohydrate

Options

A. Phosphatase
B. ATP ase
C. Phosphorylase
D. Catalase.

Answer

To answer the question "Which enzyme helps in the transfer of phosphate group from ATP to a carbohydrate?", we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for an enzyme that transfers a phosphate group from ATP to a carbohydrate. This process is known as phosphorylation.

2. **Analyzing the Options**:
- **Option 1: Phosphatase**: This enzyme is responsible for removing phosphate groups from molecules. Since the question is about transferring a phosphate group, this option is incorrect.

- **Option 2: ATPase**: ATPase catalyzes the hydrolysis of ATP, which means it breaks down ATP to release energy and does not transfer the phosphate group to another molecule. Therefore, this option is also incorrect.

- **Option 3: Phosphorylase**: This enzyme catalyzes the addition of a phosphate group from ATP to a carbohydrate. It is specifically involved in the process of phosphorylating carbohydrates, making this option a strong candidate for the correct answer.

- **Option 4: Catalase**: Catalase is an enzyme that breaks down hydrogen peroxide into water and oxygen. It does not participate in phosphate transfer, making this option incorrect.

3. **Identifying the Correct Answer**: After evaluating all options, we find that phosphorylase is the enzyme that helps in the transfer of a phosphate group from ATP to a carbohydrate. Therefore, the correct answer is **Option 3: Phosphorylase**.

### Conclusion:
The enzyme that helps in the transfer of a phosphate group from ATP to a carbohydrate is **Phosphorylase**.

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