Chief energy food of cell is

Options

A. Nucleotides
B. Proteins
C. Carbohydrates
D. Vaculose.

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question provides four options: nucleotides, proteins, carbohydrates, and vacuoles. We need to determine which of these is the chief energy food for cells.

2. **Understanding Cell Energy Needs**: Cells require energy to perform various functions such as growth, repair, and maintenance. The primary source of energy for cellular processes is crucial to identify.

3. **Focus on Carbohydrates**: Among the options, carbohydrates are known to be the primary source of energy. They are broken down into simpler sugars, primarily glucose, which is a key energy molecule for cells.

4. **Processes Involving Carbohydrates**:
- **Glycolysis**: This is the first step in the breakdown of glucose, where it is converted into pyruvate, releasing energy.
- **Krebs Cycle**: After glycolysis, pyruvate enters the Krebs cycle (also known as the citric acid cycle), where more energy is extracted.
- **Glycogenesis**: When there is an excess of glucose, it is stored as glycogen in the liver and muscles through a process called glycogenesis.
- **Muscle Contraction**: Carbohydrates are also vital for muscle contraction, as they provide the necessary energy during physical activity.

5. **Conclusion**: Based on the above information, carbohydrates are indeed the chief energy food for cells. Therefore, the correct answer is carbohydrates.

**Final Answer**: The chief energy food of the cell is carbohydrates.

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