Metabolism is feature of:

Options

A. Living beings
B. Non-Living
C. Both (1) and (2)
D. Vírus

Answer

**Step-by-Step Solution:**

1. **Understanding Metabolism**:
- Metabolism refers to the sum total of all chemical reactions that occur within a living organism. These reactions are essential for maintaining life, as they involve the synthesis and breakdown of biomolecules.

2. **Identifying Characteristics of Living Organisms**:
- All living organisms are characterized by their ability to carry out metabolic processes. This includes the transformation of energy and matter through various biochemical reactions.

3. **Defining Metabolism**:
- Metabolism is unique to living organisms. It is described as the defining feature of life because it encompasses all the chemical processes that sustain life, such as growth, reproduction, and response to environmental changes.

4. **Exclusion of Non-Living Entities**:
- Non-living entities do not exhibit metabolism. They do not undergo chemical reactions that are characteristic of living organisms.

5. **Conclusion**:
- Based on the understanding that metabolism is a feature exclusive to living organisms, the correct answer to the question "Metabolism is a feature of:" is "living organisms."

**Final Answer**: Metabolism is a feature of living organisms.

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