McqMate
| Q. |
What is true about viruses without exception? |
| A. | They contain a core of RNA |
| B. | They can infect bacteria |
| C. | They cannot produce antibodies |
| D. | They can multiply only in host cells |
| Answer» D. They can multiply only in host cells | |
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Explanation: Viruses do not contain enzymes for energy production or protein synthesis. For a virus to multiply, it must invade a host cell and direct the host's metabolic machinery to produce viral enzymes, viral proteins, and copies of its nucleic acid, using the host cell's ATP to power the reactions. |
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