Which is formed alongwith ATP in glycolysis

Options

A. NADH
B. NADPH
C. FAD
D. `FADH_(2)`

Answer

**Step-by-Step Solution:**

1. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that converts glucose into pyruvate. This process occurs in the cytoplasm of the cell and involves a series of enzymatic reactions.

2. **Key Products of Glycolysis**: During glycolysis, the main products formed are ATP and NADH. Specifically, for each molecule of glucose that undergoes glycolysis, a net gain of ATP and NADH is observed.

3. **ATP Production**: In glycolysis, a total of 4 ATP molecules are produced. However, 2 ATP molecules are consumed in the initial steps of the process (specifically in the first and third steps). Therefore, the net gain of ATP from glycolysis is 2 ATP molecules.

4. **NADH Formation**: Additionally, 2 molecules of NADH are formed during glycolysis. This occurs when NAD+ accepts electrons and protons during the conversion of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate.

5. **Conclusion**: Therefore, along with ATP, NADH is also formed during glycolysis. The correct answer to the question is NADH.

**Final Answer**: NADH is formed along with ATP in glycolysis.

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