Instantaneous source of energy is

Options

A. proteins
B. fats
C. nucleic acids
D. glucose

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the instantaneous source of energy among the given options: proteins, fats, nucleic acids, or glucose.

2. **Defining Instantaneous Energy**: Instantaneous energy refers to energy that can be quickly utilized by the body. This means the substance must be readily available and easily converted into energy.

3. **Analyzing the Options**:
- **Proteins**: While proteins can be used for energy, they are primarily used for growth and repair. Their breakdown into usable energy is not instantaneous.
- **Fats**: Fats are a dense source of energy but require more time to be broken down and converted into usable energy.
- **Nucleic Acids**: These are primarily involved in genetic information and not directly in energy production.
- **Glucose**: This is a simple sugar and a carbohydrate that is readily available for energy production.

4. **Identifying the Correct Answer**: Glucose is the most suitable option as it is quickly metabolized to release energy. The breakdown of glucose occurs through a process called glycolysis.

5. **Understanding Glycolysis**: Glycolysis is the metabolic pathway that converts glucose into pyruvic acid (or pyruvate), producing ATP (adenosine triphosphate) in the process. ATP is the energy currency of the cell and can be used immediately for various cellular activities.

6. **Conclusion**: Therefore, the instantaneous source of energy is **glucose**.

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