Metabolic water is the one

Options

A. Used during transamination
B. Used during photosynthesis
C. Produced during aerobic utilisation of glucose
D. Produced during condensation or polymerisation.

Answer

### Step-by-Step Text Solution

1. **Understanding Metabolic Water**:
- Metabolic water is the water produced as a byproduct of metabolic processes, particularly during cellular respiration.

2. **Aerobic Respiration Overview**:
- Aerobic respiration involves several stages, starting with glycolysis, which occurs in the cytoplasm. The end products of glycolysis then enter the Krebs cycle.

3. **Krebs Cycle and Electron Transport Chain**:
- In the Krebs cycle, NADH and FADH2 are produced, which are energy carriers. These molecules cannot be used directly for energy; they must be converted to ATP through the electron transport chain.

4. **Role of the Electron Transport Chain**:
- The electron transport chain is located in the inner mitochondrial membrane (cristae). It consists of a series of proteins called cytochromes that facilitate redox reactions.

5. **Formation of Metabolic Water**:
- During the electron transport chain, H+ ions are transferred through the cytochrome chain, and oxygen acts as the final electron acceptor. When oxygen combines with protons (H+), metabolic water (H2O) is produced.

6. **Conclusion**:
- Therefore, metabolic water is produced during the aerobic utilization of glucose, specifically as a byproduct of the electron transport chain in aerobic respiration.

### Final Answer:
- The correct option is that metabolic water is produced during the aerobic utilization of glucose.

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