Enzymes taking part in glycolysis are present in

Options

A. Cytoplasm
B. Mitochondria
C. Both mitochondria and cytoplasm
D. Vacuole.

Answer

**Step-by-Step Solution:**

1. **Understanding Glycolysis**: Glycolysis is a metabolic process that involves the breakdown of glucose to produce energy. It is the first step in cellular respiration and occurs in the presence of oxygen (aerobic respiration).

2. **Definition of Glycolysis**: The term "glycolysis" is derived from two words: "glyco," which refers to glucose, and "lysis," which means breakdown. Therefore, glycolysis literally means the breakdown of glucose.

3. **Process of Glycolysis**: During glycolysis, one molecule of glucose (a six-carbon compound) is converted into two molecules of pyruvate (a three-carbon compound). This process also generates energy in the form of ATP (adenosine triphosphate), specifically producing a net gain of 2 ATP molecules per glucose molecule.

4. **Location of Glycolysis**: Glycolysis takes place in the cytoplasm of the cell. This is crucial because it determines where the enzymes involved in this process are located.

5. **Evaluating Other Options**:
- **Mitochondria**: This organelle is primarily involved in the Krebs cycle (also known as the citric acid cycle), which occurs after glycolysis. Therefore, enzymes for glycolysis are not found in the mitochondria.
- **Both Mitochondria and Cytoplasm**: Since glycolysis occurs only in the cytoplasm, this option is incorrect.
- **Vacuole**: The vacuole is a storage organelle that contains sap and is not involved in the glycolysis process. Thus, this option is also incorrect.

6. **Conclusion**: Based on the above analysis, the correct answer to the question is that the enzymes taking part in glycolysis are present in the **cytoplasm**.

**Final Answer**: Cytoplasm

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