In which part of the cell, does Kreb's cycle take place?

Options

A. Cytoplasm
B. Mitochondria
C. Chloroplast
D. Both (a) and (b)

Explanation

### Step-by-Step Solution:

1. **Understanding the Krebs Cycle**: The Krebs Cycle, also known as the citric acid cycle or TCA cycle, is a crucial metabolic pathway that generates energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.

2. **Location of Glycolysis**: Before the Krebs Cycle can occur, glycolysis takes place in the cytoplasm of the cell. Glycolysis converts glucose into pyruvate, which is then used in the Krebs Cycle.

3. **Formation of Acetyl-CoA**: After glycolysis, the pyruvate produced is transported into the mitochondria, where it is converted into acetyl-CoA. This conversion is essential for the Krebs Cycle to proceed.

4. **Krebs Cycle Location**: The Krebs Cycle itself occurs in the mitochondria of the cell. Mitochondria are often referred to as the "powerhouses" of the cell because they are responsible for producing ATP, the energy currency of the cell.

5. **Aerobic Process**: The Krebs Cycle is an aerobic process, meaning it requires oxygen to function effectively. This is important for the complete oxidation of acetyl-CoA to produce energy.

6. **Conclusion**: Therefore, the Krebs Cycle takes place in the mitochondria of the cell.

### Final Answer:
The Krebs Cycle takes place in the mitochondria.

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