All are true about glycolysis, except

Options

A. Oxygen independent pathway
B. It produces one pyruvic acid molecule from each glucose
C. It occurs in the cytoplasm of cell
D. It can operate by using both glucose and fructose

Answer

To solve the question "All are true about glycolysis, except," we need to analyze each of the provided options related to glycolysis. Here’s a step-by-step breakdown:

### Step 1: Understand Glycolysis
Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing ATP and NADH in the process. It occurs in the cytoplasm and can function in both the presence and absence of oxygen.

### Step 2: Evaluate Each Option
1. **Oxygen independent pathway**: Glycolysis does not require oxygen to occur, making this statement true.

2. **Produces one pyruvate molecule from each glucose**: This statement is incorrect. Glycolysis produces two molecules of pyruvate from one molecule of glucose.

3. **Occurs in the cytoplasm of the cell**: This statement is true. Glycolysis takes place in the cytoplasm.

4. **Can operate by using both glucose and fructose**: This statement is also true. Glycolysis can utilize both glucose and fructose as substrates since both are six-carbon sugars.

### Step 3: Identify the Incorrect Statement
From the evaluation:
- The first, third, and fourth options are true.
- The second option is false because glycolysis produces two pyruvate molecules from one glucose molecule.

### Conclusion
The correct answer to the question "All are true about glycolysis, except" is option 2: "It produces one pyruvate molecule from each glucose."

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