Kreb's cycle takes place in

Options

A. Cytoplasm
B. Chloroplast
C. Mitochondrial matrix
D. None

Answer

**Step-by-Step Solution:**

1. **Understanding the Kreb's Cycle**: The Kreb's cycle, also known as the citric acid cycle or TCA cycle (tricarboxylic acid cycle), is a crucial part of aerobic respiration. It is involved in the metabolic pathway that generates energy through the oxidation of acetyl-CoA.

2. **Identifying the Location**: The Kreb's cycle occurs in the mitochondria of cells. More specifically, it takes place in the mitochondrial matrix, which is the innermost compartment of the mitochondria.

3. **Eliminating Other Options**:
- **Cytoplasm**: While glycolysis occurs in the cytoplasm, the Kreb's cycle does not.
- **Chloroplast**: This is where photosynthesis occurs, not the Kreb's cycle.
- **None**: This option is incorrect as we have identified the correct location.

4. **Conclusion**: Based on the above information, the Kreb's cycle takes place in the mitochondrial matrix.

**Final Answer**: The Kreb's cycle takes place in the mitochondrial matrix.

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