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- Question
Which of the following is true regarding anthrax?
Options- A. Anthrax is caused by a virus
- B. Anthrax is highly contagious
- C. Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis
- D. Inhalation Anthrax requires infection with a large number of spores
- Correct Answer
- Inhalation Anthrax requires infection with a large number of spores
- 1. All infections do not cause fever and all fevers are not due to infections which of the following is an example of non-infections cause of fever?
Options- A. Typhoid
- B. Chicken pox
- C. Rheumatic disease
- D. Malaria Discuss
- 2. Lactoferrin helps to protect against pathogens by
Options- A. sequestering Iron
- B. blocking sebum production
- C. lowering the pH
- D. facilitating the growth of normal flora Discuss
- 3. Plastic implants can pose a serious nosocomial infection problem because
Options- A. phagocytes have trouble moving on the plastic surface
- B. phagocytes have trouble engulfing bacteria embedded in a biofilm
- C. infected implants usually have to be surgically removed
- D. all of the above Discuss
- 4. 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
- 5. 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
- 6. Which is not a major defense mechanism in the stomach?
Options- A. Proteolytic enzymes
- B. Low pH
- C. Dense normal flora
- D. All of these Discuss
- 7. The influenza vaccine is administered each year because
Options- A. mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
- B. it is a polysaccharide vaccine that does not confer long-term protection
- C. the vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
- D. none of the above Discuss
- 8. The "A" subunit of diphtheria toxin
Options- A. binds host cell receptors found on heart cells
- B. cause ADP ribosylation of a factor involved in protein synthesis
- C. forms cAMP that leads to fluid accumulation
- D. lysis macrophages with the release of cytokines Discuss
- 9. Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause
Options- A. ADP ribosylation of adenylate cyclase that stops production of cAMP
- B. ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
- C. cleavage of rRNA that results in disruption of ribosome function
- D. ADP ribosylation of guanylate cyclase that stimulates production of cGMP Discuss
- 10. The process of Gram staining is based on the ability of bacterial cell wall
Options- A. to retain the safranin dye
- B. to retain the crystal violet dye during solvent treatment.
- C. to retain part of both dyes
- D. none of above Discuss
Microorganisms and Disease problems
Search Results
Correct Answer: Rheumatic disease
Correct Answer: sequestering Iron
Correct Answer: all of the above
Correct Answer: Tumor necrosis factor (TNF)
Correct Answer: an effective antibacterial both in animals as well as in in-vitro cultures
Correct Answer: Dense normal flora
Correct Answer: mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
Correct Answer: cause ADP ribosylation of a factor involved in protein synthesis
Correct Answer: ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
Correct Answer: to retain the crystal violet dye during solvent treatment.
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