MCQ IN MEDICINE

Detailed explanation-1: -A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.

Detailed explanation-2: -Bacteria are microscopic pathogens that reproduce rapidly after entering the body. They can release toxins that damage tissues and cause illness. Doctors typically prescribe antibiotics to treat bacterial infections, but some bacteria are becoming resistant to these drugs. Not all bacteria are pathogenic, though.

Detailed explanation-3: -A pathogenic organism is an organism which is capable of causing diseases in a host (person) [2]. The World Health Organization (WHO) listed among hazards that may be present in food potentially harmful bacteria, viruses, toxins, parasites and chemicals.