Which of the following serves as the breakdown site for beta-oxidation?

Options

A. Cytosol
B. Extramembrane space of mitochondria
C. Matrix of mitochondria
D. Smooth endoplasmic reticulum

Answer

**Step-by-Step Solution:**

1. **Understanding Beta-Oxidation**: Beta-oxidation is a metabolic process that involves the breakdown of fatty acids to produce energy. It is essential for the metabolism of fats in living organisms.

2. **Location of Beta-Oxidation**: This process primarily takes place in the mitochondria of eukaryotic cells. The specific site within the mitochondria where beta-oxidation occurs is known as the matrix.

3. **Prokaryotic Cells**: In prokaryotic cells, which lack mitochondria, beta-oxidation occurs in the cytosol. However, the question does not specify whether the organism in question is prokaryotic or eukaryotic.

4. **Conclusion**: Since the question is likely referring to eukaryotic cells (as is common in such contexts), the breakdown site for beta-oxidation is the matrix of mitochondria.

5. **Final Answer**: The correct answer is the matrix of mitochondria.

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