Though mitochondria are absent in the prokaryotes, Krebs cycle occurs in

Options

A. Cytoplasm
B. Nucleoid
C. Ribosome
D. Plasma Membrane

Answer

**Step-by-Step Solution:**

1. **Understanding Prokaryotes:** Prokaryotic cells, such as bacteria, do not have membrane-bound organelles, including mitochondria, where the Krebs cycle typically occurs in eukaryotic cells.

2. **Identifying the Location of the Krebs Cycle in Prokaryotes:** In prokaryotes, the Krebs cycle does not occur in mitochondria. Instead, it takes place in a specialized structure called mesosomes.

3. **Role of Mesosomes:** Mesosomes are infoldings of the plasma membrane in prokaryotic cells. They increase the surface area for biochemical processes, including the Krebs cycle.

4. **Conclusion:** Since mesosomes are associated with the plasma membrane, the Krebs cycle in prokaryotes occurs in the plasma membrane.

5. **Final Answer:** The correct option is **option 4: plasma membrane**.

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