Gram-negative — Flashcards

Flashcard 91: Indirect transmission of Brucella spp. results from ingestion of _____

Answer: unpasteurized dairy products (milk, cheese)

Flashcard 92: Endotoxin/Lipopolysaccharide of Gram Negative Bacteria can activate the _____ system, resulting in release of C3a and C5a

Answer: complement

Flashcard 93: What is the oxygen dependency of Pseudomonas aeruginosa? _____

Answer: Obligate aerobe

Extra: Pseudomonas aeruginosa is an obligate aerobe. It uses oxygen as its terminal electron acceptor and cannot ferment. Common obligate aerobes: **N**agging **P**ests **M**ust **B**reathe - **N**ocardia - **P**seudomonas aeruginosa - **M**ycobacterium tuberculosis - **B**acillus anthracis

Flashcard 94: _____ is a facultative intracellular bacterium that can live in urethral epithelial cells

Answer: Neisseria

Flashcard 95: Which part of Lipopolysaccharide is highly toxic and triggers cytokine release? _____

Answer: Lipid A

Flashcard 96: _____ is a species of Neisseria that is encapsulated

Answer: Neisseria meningitidis

Flashcard 97: What gram staining group have porins in their wall? _____

Answer: Gram negative, and thus can downregulate porins in β-lactam resistance

Flashcard 98: What is the gram stain of Legionella? _____

Answer: Gram negative*

Flashcard 99: Proteus mirabilis commonly causes _____ infections

Answer: urinary tract

Flashcard 100: What is the stain and shape of Helicobacter pylori? _____

Answer: Gram negative curved/spiral rod