Fumarase changes fumaric acid into

Options

A. Malic acid
B. Maleic acid
C. Citric acid,
D. Succinic acid.

Answer

To solve the question "Fumarase changes fumaric acid into which of the following compounds?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reaction**: Understand that fumarase is an enzyme that catalyzes a specific reaction in the Krebs cycle. The question is asking what fumarase converts fumaric acid into.

2. **Understand Fumaric Acid**: Fumaric acid is a dicarboxylic acid that is an intermediate in the Krebs cycle.

3. **Know the Role of Fumarase**: Fumarase catalyzes the hydration of fumaric acid. This means it adds a water molecule to fumaric acid.

4. **Determine the Product**: When fumaric acid undergoes hydration through the action of fumarase, it is converted into malate (also known as malic acid).

5. **Select the Correct Answer**: Based on the reaction, the correct answer to the question is malate.

### Final Answer:
Fumarase changes fumaric acid into **malate**.

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