Enzymes of citric acid or Krebs cycle occur in

Options

A. on inner mitochondrial membrane
B. in the matrix
C. on outer mitochondrial membrane
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Citric Acid Cycle**: The citric acid cycle, also known as the Krebs cycle, is a crucial part of aerobic respiration. It follows glycolysis, where glucose is broken down into pyruvate.

2. **Location of the Krebs Cycle**: The Krebs cycle occurs in the mitochondria, which are the powerhouses of the cell.

3. **Identifying the Specific Location**: Within the mitochondria, there are two main compartments: the inner mitochondrial membrane and the matrix. The Krebs cycle specifically takes place in the matrix of the mitochondria.

4. **Conclusion**: Therefore, the enzymes that facilitate the reactions of the citric acid cycle are located in the matrix of the mitochondria.

5. **Final Answer**: The enzymes of the citric acid or Krebs cycle occur in the matrix of the mitochondria.

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