Respiration is an

Options

A. Endothermic process
B. Exothermic process
C. Anabolic process
D. Endergonic process

Explanation

**Step-by-Step Solution:**

1. **Understanding Respiration**: Respiration is a biochemical process that occurs in living organisms where glucose is broken down to release energy.

2. **Types of Processes**: There are different types of metabolic processes:
- **Endothermic Process**: A process that absorbs heat.
- **Exothermic Process**: A process that releases heat or energy.
- **Anabolic Process**: A process that builds complex molecules from simpler ones.
- **Endobonic Process**: This term is not commonly used in biological contexts.

3. **Analyzing Respiration**: In the context of respiration, glucose (a simple sugar) is broken down in the presence of oxygen to produce carbon dioxide, water, and energy.

4. **Energy Release**: During respiration, energy is released from the breakdown of glucose. This energy is primarily stored in the form of ATP (adenosine triphosphate), which is known as the energy currency of the cell.

5. **Conclusion**: Since respiration involves the release of energy, it is classified as an **exothermic process**.

6. **Final Answer**: Therefore, the correct answer to the question "Respiration is an" is **exothermic process**.

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