Are viruses considered alive by most scientists?

• A. Yes, because they contain genetic material and can evolve.
• B. No, because they are only found in plants.
• C. Yes, because they are made of cells.
• D. No, because they cannot carry out metabolism or reproduce independently.

Answer: (D)

Verified step by step guidance

1. Understand the criteria that define living organisms, which typically include the ability to carry out metabolism, reproduce independently, respond to stimuli, and maintain homeostasis.
2. Recognize that viruses contain genetic material (DNA or RNA) and can evolve over time, which are characteristics of life.
3. Note that viruses lack cellular structure and cannot perform metabolic processes on their own; they require a host cell to reproduce.
4. Evaluate the statement that viruses are only found in plants, which is incorrect because viruses can infect animals, plants, bacteria, and other organisms.
5. Conclude that most scientists do not consider viruses alive because they cannot carry out metabolism or reproduce independently, despite having genetic material and the ability to evolve.