Microorganisms and Disease problems
- 1. Which of the following disease is caused by DNA viruses?
Options- A. Poliomyelitis
- B. Yellow fever
- C. Measles
- D. Small pox Discuss
Correct Answer: Small pox
- 2. Coxsackie virus B3, a subgroup of enteroviruses, commonly causes
Options- A. acute hemorrhagic conjunctivitis
- B. muscular dystrophy
- C. myocarditis
- D. gastroenteritis Discuss
Correct Answer: myocarditis
- 3. Both Mycobacterium tuberculosis and Streptococcus pneumoniae
Options- A. are acquired by inhalation
- B. have cell walls that contain a high content of mycolic acids
- C. have polysaccharide capsules
- D. stay in the lung and rarely, if ever, enter the bloodstream Discuss
Correct Answer: are acquired by inhalation
- 4. Each of the 3 virulence factors of Bacillus anthracis i.e. the capsule, edema toxin and lethal toxin can affect the activity of
Options- A. B cells
- B. macrophages
- C. ciliated epithelial cells
- D. M cells Discuss
Correct Answer: macrophages
- 5. The agent responsible for causing mad cow disease is thought to be a
Options- A. fungus
- B. protozoan
- C. prion
- D. virus Discuss
Correct Answer: prion
- 6. An important host defense of human beings is a dense resident microbiota associated with
Options- A. lungs
- B. bladder
- C. uterus
- D. vagina Discuss
Correct Answer: vagina
- 7. Type III secretion systems are used to inject "effector" proteins directly into a host cell. Salmonella uses a type III secretion system to help the pathogen to
Options- A. survive the acid pH of the stomach
- B. secrete LT (heat labile toxin) and ST (heat stable toxin) into the lumen of the intestine
- C. survive within macrophages
- D. activate T cells to proliferate and secrete cytokines Discuss
Correct Answer: survive within macrophages
- 8. The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is
Options- A. heat killed virus
- B. live attenuated strains of all three immunological types
- C. small dosage of wild-type live viruses
- D. formalin-inactivated viruses Discuss
Correct Answer: live attenuated strains of all three immunological types
- 9. Which of the following disease is not caused by microbial protein toxin?
Options- A. Botulism
- B. Diphtheria
- C. Shigella dysentery
- D. Tuberculosis Discuss
Correct Answer: Tuberculosis
- 10. In the human disease cholera, what is it that actually ends up killing the victim?
Options- A. Faulty carrier proteins
- B. Dehydration and loss of nutrients
- C. Too little water in the food stream
- D. the toxin produced by the bacterium Discuss
Correct Answer: Dehydration and loss of nutrients
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