Mechanisms Of Infectious Disease

31 Questions | By Jces06 | Last updated: Feb 22, 2013 | Total Attempts: 138

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Introduction to Microbes and Parasites

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Questions and Answers

1.

What is commensalism?
- A.
  
  Interaction in which one organism benefits and the host is unaffected
- B.
  
  Microorganism and the host both derive benefits from the interaction
- C.
  
  Only the infecting organism benefits
- D.
  
  Organism capable of supporting the nutritional and physical requirements of another
2.

What is mutualism?
- A.
  
  Interaction in which one organism benefits and the host is unaffected
- B.
  
  E.coli in the gut
- C.
  
  Only the infecting organism benefits from the relationship
- D.
  
  Organism capable of supporting the nutritional and physical growth requirements of another
3.

Prions cause what?
- A.
  
  HPV
- B.
  
  Hepatitis
- C.
  
  Spongiform encephalopathies
- D.
  
  Avian flu
4.

Transmissable neurodegenerative diesease that is slow, irreversible, progressive neuronal degeneration that is transmitted via ingestion of infected neuronal tissue is?
- A.
  
  Kuru
- B.
  
  Creutzfeldt-Jakob Disease
- C.
  
  Scrapie
- D.
  
  All of the above
5.

Kuru is thought to be transmitted by?
- A.
  
  Sporadic unknown origin
- B.
  
  Cannabalism
- C.
  
  Familial
- D.
  
  Variant
6.

Creutzfeld-Jakob Disease is transmitted the most by?
- A.
  
  Variant
- B.
  
  Familial
- C.
  
  Sporadic unknown
- D.
  
  Cannibalism
7.

A virus can be oncogenic?
- A.
  
  True
- B.
  
  False
8.

What class of viruses cause genital warts, penile cancer and cervical cancer?
- A.
  
  Human Papilloma Virus
- B.
  
  Herpes Simplex Virus 1
- C.
  
  Herpes Simplex Virus 2
- D.
  
  Human Immunodeficiency Virus
9.

How do new strains of influenza arise?
- A.
  
  Genetic drift
- B.
  
  Only A
- C.
  
  Genetic Shift
- D.
  
  Both A & C
10.

Gram + Streptococcus
- A.
- B.
- C.
- D.
11.

Gram + Staphylococcus
- A.
- B.
- C.
- D.
12.

Gram - Bacilli
- A.
- B.
- C.
- D.
13.

Gram negative cell wall is thicker then gram positive cell wall?
- A.
  
  True
- B.
  
  False
14.

What is Acid-fast bacteria responsible for?
- A.
  
  Group A Beta Strep
- B.
  
  Tuberculosis
- C.
  
  Jock itch
- D.
  
  Group B Strep
15.

An antibiotic is?
- A.
  
  Kills microbes
- B.
  
  Stops growth without killing
- C.
  
  Product of a microbe that can inhibit or kill other microbes
- D.
  
  Chemical substance used within the body for therapeutic purposes
16.

Bacteriocidial is?
- A.
  
  Stops growth without killing
- B.
  
  Kills microbes
- C.
  
  Product of a microbe that can inhibit or kill other microbes
- D.
  
  Chemical substance used within the body for therapeutic purposes
17.

Minimal Inhibitory Concentration is?
- A.
  
  Minimal concentration of antibiotic that will inhibit the visible growth
- B.
  
  Minimal concentration of antibiotic required to kill a particular bacterium
18.

Primary antifungals target?
- A.
  
  Cholesterol
- B.
  
  Ergosterol
- C.
  
  Peptidoglycan
- D.
  
  Lipopolysaccharide
19.

What is PCR?
- A.
  
  Measure the presence or concentration of a substance in solutions that frequently contain a complex mixture of substances
- B.
  
  Examines the levels of specific substances and enzymes that are produced by chemical reactions in the body
- C.
  
  Amplifies a single or a few copies of DNA across several orders of magnitude generating thousands to millions of copies of a particular DNA sequence
- D.
  
  The first step of identification of a bacterial organism

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