IX - Gram-Negative Bacteria Taxonomy

Question 1

Gram (-) diplococci, encapsulated, ferments maltose and glucose

Answer 1

Neisseria meningitidis

Question 2

Gram (-) diplococci, encapsulated, ferments glucose only

Answer 2

Neisseria gonorrhoeae

Question 3

Gram (-) rods, enriched chocolate agar, polyribitol phosphate capsule

Answer 3

Haemophilus influenza type B

Question 4

Gram (-) rods, Bordet-Gengou agar, whooping cough

Answer 4

Bordatella pertussis

Question 5

Gram (-) rods, poorly gram staining, silver stain, charcoal yeast agar, airconditioning

Answer 5

Legionella pneumophila

Question 6

Gram (-) rods, lactose fermenter, green sheen

Answer 6

Escherichia coli

Question 7

Gram (-) rods, lactose fermenter, urease (+), ESBL

Answer 7

Klebsiella pneumoniae

Question 8

Gram (-) rods, comma-shaped, motile, oxidase (+), shooting star

Answer 8

Vibrio cholerae

Question 9

Gram (-) rods, comma-shaped, microaerophilic, Skirrow’s agar

Answer 9

Campylobacter jejuni

Question 10

Gram (-) rods, comma-shaped, urease (+)

Answer 10

Helicobacter pylori

Question 11

Non-lactose fermenting gram (-) rods, motile, oxidase (-), H2S producer

Answer 11

Salmonella

Question 12

Non-lactose fermenting gram (-) rods, non-motile, oxidase (-), H2S non-producer

Answer 12

Shigella

Question 13

Non-lactose fermenting gram (-) rods, swarming, oxidase (-) H2S producer, urease (+)

Answer 13

Proteus mirabilis

Question 14

Non-lactose fermenting gram (-) rods, oxidase (+), H2S non-producer, obligate aerobes

Answer 14

Pseudomonas aeruginosa

Question 15

Gram (-) rods, predominant anaerobe of the human colon, bowel trauma, perforation or surgery

Answer 15

Bacteroides fragilis