Amphibolic cycle that occurs only in aerobic condition is

Options

A. EMP pathway
B. Glycolysis
C. Krebs' cycle
D. ETC

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for an amphibolic cycle that occurs only in aerobic conditions. An amphibolic cycle is one that involves both catabolic (breakdown) and anabolic (synthesis) processes.

2. **Identify the Options**: The options provided are:
- A) EMP pathway (Glycolysis)
- B) Krebs cycle
- C) Electron Transport Chain (ETC)

3. **Evaluate Each Option**:
- **Option A: EMP Pathway (Glycolysis)**: This pathway is primarily anaerobic and does not occur exclusively in aerobic conditions. Therefore, it cannot be the correct answer.
- **Option B: Krebs Cycle**: This cycle is known to be amphibolic as it involves both catabolic and anabolic reactions. It occurs only in aerobic conditions, making it a strong candidate for the answer.
- **Option C: Electron Transport Chain (ETC)**: While this process occurs in aerobic conditions, it is not a cycle but rather a series of reactions that transfer electrons to produce ATP. Thus, it is not the correct answer.

4. **Conclusion**: After evaluating the options, the Krebs cycle is the only amphibolic cycle that occurs exclusively in aerobic conditions.

5. **Final Answer**: The amphibolic cycle that occurs only in aerobic conditions is the **Krebs cycle**.

---