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- Question
The toxins produced by bacteria
Options- A. kill viruses
- B. encourage bacterial reproduction
- C. interfere with physiological processes in the body
- D. all of the above
- Correct Answer
- interfere with physiological processes in the body
- 1. What is common in catheters and ventilators?
Options- A. They bypass important defenses of the body
- B. Bacteria responsible for associated infections are usually susceptible to antibiotics
- C. They predispose patients to viral rather than bacterial infections
- D. They are used primarily in neonatal intensive care units Discuss
- 2. 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
- 3. Which of the following disease is not caused by microbial protein toxin?
Options- A. Botulism
- B. Diphtheria
- C. Shigella dysentery
- D. Tuberculosis Discuss
- 4. 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
- 5. 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
- 6. Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?
Options- A. Both organisms are gram-positive spore formers
- B. Diphtheria toxin and edema toxin are ADP ribosylating toxins
- C. The most serious disease symptoms are the direct result of toxin action
- D. Both organisms cause skin and respiratory tract infections Discuss
- 7. Pseudomembraneous colitis is
Options- A. precipitated by the use of certain antibiotics
- B. caused by a gram-positive bacterium
- C. caused by a spore-forming bacterium
- D. all of the above Discuss
- 8. Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine?
Options- A. The possession of a segmented RNA genome
- B. A limited number of capsule types
- C. The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings
- D. The ability of the Rotavirus to be transmitted faster Discuss
- 9. A major difference between EHEC and EPEC is
Options- A. EHEC secretes a Shiga-like toxin and EPEC does not
- B. EHEC possesses a type III secretion system and EPEC does not
- C. EPEC rearranges host cell actin and EHEC does not
- D. EPEC passes through the placenta to infect the fetus and EHEC does not Discuss
- 10. Mucus helps in protecting against pathogens by
Options- A. lowering the pH
- B. facilitating the growth of normal flora
- C. blocking access and attachment of pathogens to mucosal surfaces
- D. sequestering Iron Discuss
Microorganisms and Disease problems
Search Results
Correct Answer: They bypass important defenses of the body
Correct Answer: Dehydration and loss of nutrients
Correct Answer: Tuberculosis
Correct Answer: live attenuated strains of all three immunological types
Correct Answer: survive within macrophages
Correct Answer: The most serious disease symptoms are the direct result of toxin action
Correct Answer: all of the above
Correct Answer: The possession of a segmented RNA genome
Correct Answer: EHEC secretes a Shiga-like toxin and EPEC does not
Correct Answer: blocking access and attachment of pathogens to mucosal surfaces
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