Microbiology CH 14 Exam Questions And Answers.
Which of the following statements concerning pathology, infection, and disease is true?
A. The
... [Show More] majority of microorganisms are pathogenic.
B. Microorganisms that make up the normal microbiota of an individual never cause disease.
C. Pathology refers to the study of structural and functional changes that occur in the body as a result of a disease.
D. The term infection is synonymous with the term disease. - CORRECT ANSWER C. Pathology refers to the study of structural and functional changes that occur in the body as a result of a disease.
Which of the following is an example of the symbiotic relationship known as mutualism?
A. a tapeworm in the gastrointestinal tract of a human
B. E. coli within the large intestine
C. saprophytic Mycobacterium of the ear
D. Corynebacterium on the surface of the eye - CORRECT ANSWER B. E. coli within the large intestine
Koch's postulates established criteria for proving that a specific organism causes a specific disease. Which of the following is NOT one of the criteria given by Koch's postulates?
A. The pathogen must be isolated from inoculated animals and must be different from the original organism.
B. The pathogen must be isolated from the diseased host and grown in pure culture.
C. The pathogen isolated from a pure culture must cause the disease in a healthy lab animal.
D. The same pathogen must be present in every case of the disease. - CORRECT ANSWER A. The pathogen must be isolated from inoculated animals and must be different from the original organism.
This is not one of the criteria. According to Koch's postulates, the pathogen isolated from the inoculated animals must be the same as the original organism.
Which of the following is classified as a latent disease?
A. tuberculosis
B. infectious mononucleosis
C. shingles
D. influenza - CORRECT ANSWER C. shingles
A patient acquires an infection by touching a contaminated door handle. Which mode of transmission best describes this scenario?
A. direct contact transmission
B. vehicle transmission
C. droplet transmission
D. indirect contact transmission - CORRECT ANSWER D. indirect contact transmission
A dog develops a diarrheal disease after drinking water from a creek during a hike with his owner. Which of the following best describes this method of disease transmission?
A. vehicle transmission
B. vector transmission
C. contact transmission
D. There is not enough information to determine the mode of transmission. - CORRECT ANSWER A. vehicle transmission [Show Less]