How many oxygen molecules are used in glycolysis of one molecule of glucose ?

Options

A. `1//2`
B. 1
C. 0
D. 2

Answer

### Step-by-Step Solution:

1. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that converts glucose (C6H12O6) into pyruvate, producing energy in the form of ATP and NADH. This process occurs in the cytoplasm of the cell.

2. **Oxygen Requirement**: Glycolysis is classified as an anaerobic process, meaning it does not require oxygen to occur. It can happen in both the presence and absence of oxygen.

3. **Chemical Reaction Overview**: During glycolysis, one molecule of glucose is broken down into two molecules of pyruvate. This process involves several enzymatic reactions but does not involve any oxygen molecules.

4. **Conclusion**: Since glycolysis does not utilize oxygen, the number of oxygen molecules used in glycolysis for one molecule of glucose is zero.

5. **Final Answer**: The correct answer is that **zero oxygen molecules are used in glycolysis** of one molecule of glucose.