Hexokinase (Glucose + ATP `rarr` Glucose 6-P +ADP) belongs to the category

Options

A. Transferase
B. Lysases
C. Oxidoreductases
D. Transaminase.

Answer

To determine the category to which hexokinase belongs, we can analyze the reaction it catalyzes and the function of the enzyme.

### Step-by-Step Solution:

1. **Identify the Reaction**: The reaction catalyzed by hexokinase is:
\[ \text{Glucose} + \text{ATP} \rightarrow \text{Glucose 6-P} + \text{ADP} \]
Here, glucose is phosphorylated to form glucose 6-phosphate, and ATP is converted to ADP.

2. **Understand the Role of Hexokinase**: Hexokinase is an enzyme that facilitates the transfer of a phosphate group from ATP to glucose. This process is known as phosphorylation.

3. **Categorize the Enzyme**: Enzymes are categorized based on the type of reaction they catalyze. The options provided are:
- Transferase
- Lyase
- Oxidoreductase
- Transaminase

4. **Define Transferase**: Transferases are enzymes that transfer functional groups (like phosphate groups) from one molecule to another. Since hexokinase transfers a phosphate group from ATP to glucose, it fits this definition.

5. **Evaluate Other Options**:
- **Lyase**: These enzymes typically catalyze the breaking of bonds without hydrolysis or oxidation, which does not apply here.
- **Oxidoreductase**: These enzymes are involved in oxidation-reduction reactions, which is not the case for hexokinase.
- **Transaminase**: These enzymes transfer amino groups, which is also not applicable to hexokinase.

6. **Conclusion**: Based on the analysis, hexokinase belongs to the category of **Transferases**.

### Final Answer:
Hexokinase belongs to the category of **Transferases**.

---