MCQ IN MEDICINE

Detailed explanation-1: -Viruses are considered as something between living and non-living because they do not grow or reproduce by themselves. This makes them non-living. However, when a virus enters a living cell of an organism, it obtains energy from the host cell and starts reproducing.

Detailed explanation-2: -Viruses are not made out of cells, they can’t keep themselves in a stable state, they don’t grow, and they can’t make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.

Detailed explanation-3: -A virus is considered as a living organism and an obligate parasite when inside a host cell. But virus is not classified along with bacteria or fungi.

Detailed explanation-4: -Nonliving characteristics include the fact that they are not cells, have no cytoplasm or cellular organelles, and carry out no metabolism on their own and therefore must replicate using the host cell’s metabolic machinery. Viruses can infect animals, plants, and even other microorganisms.