Krebs cycle which is also called aerobic respiration require `O_(2)` supply.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Krebs Cycle:** The Krebs cycle, also known as the citric acid cycle (CAC) or tricarboxylic acid (TCA) cycle, is a crucial part of aerobic respiration. It occurs in the mitochondria of cells and is responsible for the oxidation of acetyl-CoA to produce energy.

2. **Role of Oxygen:** The Krebs cycle itself does not directly use oxygen. However, it is part of the aerobic respiration pathway, which requires oxygen for the complete oxidation of glucose. Oxygen is essential for the electron transport chain (ETC), which follows the Krebs cycle.

3. **Glycolysis and Pyruvate Formation:** The process begins with glycolysis, where glucose is broken down into pyruvate. This process occurs in the cytoplasm and does not require oxygen, making it common to both aerobic and anaerobic respiration.

4. **Fate of Pyruvate:** After glycolysis, pyruvate can either enter the Krebs cycle (if oxygen is present) or undergo fermentation (if oxygen is absent). In the presence of oxygen, pyruvate is converted into acetyl-CoA, which then enters the Krebs cycle.

5. **Energy Production:** During the Krebs cycle, acetyl-CoA is oxidized, and energy carriers like NADH and FADH2 are produced. These carriers are crucial for the next step, the electron transport chain, where ATP is generated.

6. **Conclusion:** Therefore, the statement that the Krebs cycle requires oxygen supply is accurate. While oxygen is not directly involved in the Krebs cycle, it is necessary for the overall process of aerobic respiration, particularly for the regeneration of NAD+ in the electron transport chain.