Glycolytic pathway from glucose to pyruvic acid involves 10 reactions. Each individual reaction needs -

Options

A. One molecule of ATP
B. One molecule of ADP
C. One molecule of NAD
D. One molecule of specific enzyme

Answer

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

1. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that converts glucose (a 6-carbon sugar) into pyruvic acid (a 3-carbon compound). This process occurs in the cytoplasm of the cell.

2. **Reactions Involved**: The glycolytic pathway consists of 10 sequential reactions. Each of these reactions is crucial for the conversion of glucose to pyruvic acid.

3. **Role of Enzymes**: Each of the 10 reactions in glycolysis is catalyzed by a specific enzyme. Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.

4. **Other Molecules Involved**: While ATP, ADP, and NAD+ are important in glycolysis, they are not required for every step. ATP and ADP are involved in four specific steps (1, 3, 7, and 10), and NAD+ is involved in one step (step 6).

5. **Conclusion**: Therefore, the correct answer to the question is that each individual reaction in the glycolytic pathway requires one molecule of a specific enzyme.

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