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5 Written questions

5 Matching questions

  1. antitoxins
  2. respiratory droplets
  3. streptokinase
  4. biofilm
  5. vectors
  1. a a complex community of microorganisms that form a protective and adhesive matrix that attaches to a surface, such as a catheter or industrial pipeline
  2. b small liquid droplets expelled by sneezing or coughing
  3. c an enzyme that dissolves blood clots; produced by virulent streptococci
  4. d 1. an arthropod that transmits the agents of disease from an infected host to a susceptible host
    2. a plasmid used in genetic engineering to carry a DNA segment into a bacterium or other cell
  5. e an antibody produced by the body that circulates in the bloodstream to provide protection against toxins by neutralizing them

5 Multiple choice questions

  1. a disease in which thee are few or inapparent symptoms
  2. an indication of the presence of a disease, especially one observed by a doctor but not apparent to the patient
  3. an animal disease that may be transmitted to humans
  4. the scientific study of the source, cause, and transmission of disease within a population
  5. the spread of disease through contaminated food or water

5 True/False questions

  1. noncummunicable diseasesa disease whose causative agent is acquired from the environment and is not transmitted to another individual


  2. mutualisma close and permanent association between two species of organisms in which one species benefits and the other remains unharmed and unaffected


  3. exotoxinsa bacterial metabolic poison composed of protein that is released to the environment; in the human body, it can affect various organs and systems


  4. exogenous infectiona disease that develops in an otherwise healthy individual


  5. endotoxinsa metabolic poison, produced chiefly by gram-negative bacteria, that are part of the bacterial cell wall and consequently are released on cell disintegration; composed of lipid-polysaccharide-peptide complexes


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