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- Question
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
- Correct Answer
- blocking access and attachment of pathogens to mucosal surfaces
- 1. 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
- 2. 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
- 3. 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
- 4. 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
- 5. 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 Discuss
- 6. Fatalities following influenza infection are usually due to the
Options- A. dehydration
- B. bacterial superinfection
- C. damage to the heart muscle
- D. formation of granulomas in the lung Discuss
- 7. Which of the following statements is not true regarding Mycobacterium tuberculosis and/or the disease it causes?
Options- A. The pathogen contains mycolic acid in its cell wall
- B. The pathogen can live inside macrophages
- C. Antibodies to the pathogen are protective
- D. None of these Discuss
- 8. Immunization with which of the following toxoid induces high titer serum antibody, but does not protect from the corresponding disease?
Options- A. Tetanus
- B. Botulism
- C. Diphtheria
- D. Shigellosis Discuss
- 9. Prontosil is
Options- A. an effective antibacterial when used in animals
- B. an effective antibacterial when used in in-vitro cultures
- C. an effective antibacterial both in animals as well as in in-vitro cultures
- D. not used as an antibacterial agent Discuss
- 10. Which of these cytokines is also known under the name cachectin?
Options- A. Interferon gamma
- B. Interleukin 2
- C. Tumor necrosis factor (TNF)
- D. None of the above Discuss
Microorganisms and Disease problems
Search Results
Correct Answer: EHEC secretes a Shiga-like toxin and EPEC does not
Correct Answer: The possession of a segmented RNA genome
Correct Answer: all of the above
Correct Answer: The most serious disease symptoms are the direct result of toxin action
Correct Answer: interfere with physiological processes in the body
Correct Answer: bacterial superinfection
Correct Answer: Antibodies to the pathogen are protective
Correct Answer: Botulism
Correct Answer: an effective antibacterial both in animals as well as in in-vitro cultures
Correct Answer: Tumor necrosis factor (TNF)
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