MCQ IN MEDICINE

Detailed explanation-1: -The correct option is B. Microorganisms. A microorganism or microbe is a living organism which is too small to be seen with the naked eye but visible under a microscope. Microbiology is the study of microorganisms. Bacteria, fungi, archaea or protists, virus, algae are included under microorganisms.

Detailed explanation-2: -An organism that can be seen only through a microscope. Microorganisms include bacteria, protozoa, algae, and fungi. Although viruses are not considered living organisms, they are sometimes classified as microorganisms.

Detailed explanation-3: -The term “microbe” is used to describe organisms that are too small to be seen with the naked eye. Microbes include bacteria, archaea, fungi, protists, and viruses.

Detailed explanation-4: -Researchers found bacterial cells so large they are easily visible to the naked eye, challenging ideas about how large microbes can get.