Microbiology Chapter 14 Exam Questions with 100% Correct Answers | Verified | Updated

Microbiology Chapter 14 Exam Questions with 100% Correct Answers | Verified | Updated A commensal bacterium A) does not infect its host. B) may also be an opportunistic pathogen. C) is beneficial to its host. D) does not receive any benefit from its host. E) is beneficial to, and does not infect, its host - answerB Which of the following statements is TRUE? A) At least one member must not benefit in a symbiotic relationship. B) A parasite is not in symbiosis with its host. C) Members of a symbiotic relationship cannot live without each other. D) At least one member must benefit in a symbiotic relationship. E) Symbiosis refers to different organisms living together and benefiting from each other - answerD A nosocomial infection is A) always caused by pathogenic bacteria. B) always caused by medical personnel. C) only a result of surgery. D) always present, but is inapparent at the time of hospitalization. E) acquired during the course of hospitalization. - answerE The major significance of Robert Koch's work is that A) microorganisms cause disease. B) microorganisms are the result of disease. C) microorganisms are present in a diseased animal. D) microorganisms can be cultured. E) diseases can be transmitted from one animal to another - answerA Which of the following is NOT a verified exception in the use of Koch's postulates? A) Some pathogens can cause several disease conditions. B) Some diseases have poorly defined etiologies. C) Some human diseases have no other known animal host. D) Some diseases are not caused by microbes. E) Some diseases are noncommunicable - answerE Which of the following diseases is NOT spread by droplet infection? A) diphtheria B) tuberculosis C) botulism D) measles E) the common cold - answerC Biological transmission differs from mechanical transmission in that biological transmission A) involves fomites. B) requires an arthropod. C) works only with noncommunicable diseases. D) requires direct contact. E) involves specific diseases - answerE Which of the following definitions is INCORRECT? A) endemic: a disease that is constantly present in a population B) pandemic: a disease that affects a large number of people in the world in a short time C) epidemic: a disease that is endemic across the world D) sporadic: a disease that affects a