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WorksheetsBordetella Cultural, Biochemical, and General Characteristics
Total questions: 11
Worksheet time: 6mins
Which media is Bordetella pertussis commonly cultured on?
When Bordetella pertussis is grown on selective media, its colonies are typically described as:
Large, flat, and spreading, with a metallic sheen.
Smooth, glistening, small pearly grey shiny (mercury-like), and mucoid.
Dry, wrinkled, and pigmented deep purple.
Rapidly growing, hemolytic, and rough.
How does the growth of Bordetella parapertussis differ from that of Bordetella pertussis?
B. parapertussis is non-hemolytic, while B. pertussis is hemolytic.
B. parapertussis grows more slowly and forms smaller colonies.
B. parapertussis grows more rapidly and forms larger colonies.
B. parapertussis only grows anaerobically.
Which key biochemical test result is characteristic of Bordetella pertussis but is negative for B. parapertussis and B. bronchiseptica?
Oxidase positive
Urease positive
Motility positive
Citrate positive
Which Bordetella species is characteristically positive for both Urease and Motility?
Bordetella pertussis
Bordetella parapertussis
Bordetella bronchiseptica
Bordetella holmesii
In a Gram stain, Bordetella pertussis is described as a small, non-motile organism with the shape of a:
Gram-positive rod
Gram-negative coccobacillus
Gram-negative spirochete
Gram-positive coccus in chains
Bordetella organisms may be arranged in which formation when viewed under the microscope?
Large clumps or clusters only
Singly or in pairs
Pleomorphic, palisade arrangements
Tetrads or sarcinae
During which of the three recognized stages of Bordetella pertussis infection is the patient considered most highly contagious and likely to transmit the bacterium?
Which virulence factor is believed to allow Bordetella pertussis to attach firmly to the ciliated epithelial cells of the respiratory tract?
Protection against whooping cough is included in which vaccine given to infants at 2, 4, and 6 months?
What is the preferred specimen type for the laboratory isolation of Bordetella pertussis?
