Gram-negative — Flashcards

Flashcard 111: The three components of Lipopolysaccharide (LPS) are: 1. _____ 2. Core polysaccharide 3. Lipid A

Answer: O antigen

Flashcard 112: Which exotoxin from Pseudomonas aeruginosa functions to inactivate EF-2 via ADP-Ribosylation? _____

Answer: Exotoxin A

Flashcard 113: Eosin-Methylene Blue Agar will have _____ fermenting colonies (e.g. _____) appear as a green metallic sheen

Answer: lactose

Flashcard 114: The HACEK organisms (Haemophilus, Aggregatibacter, Cardiobacterium, Eikenella, Kingella) are associated with endocarditis with _____ blood cultures

Answer: negative

Extra: Eikenella is part of normal human oral flora; infection occurs in the setting of poor dentition

Flashcard 115: Which species of Neisseria ferments glucose only? _____

Answer: Neisseria gonorrhoeae

Flashcard 116: Does Shigella ferment lactose? _____

Answer: No

Flashcard 117: Neisseria are gram _____ diplococci

Answer: negative

Flashcard 118: Factors _____ and _____ are added to chocolate agar to grow Haemophilus influenzae

Answer: V (NAD+)

Flashcard 119: Campylobacter jejuni, Vibrio cholerae and Helicobacter pylori are all curved rods that are _____ positive

Answer: oxidase

Flashcard 120: Cat scratch fever is a complication of _____ infection

Answer: Bartonella henselae