Bacteria — Flashcards

Flashcard 431: _____ is the toxin that causes the emetic type of Bacillus cereus food poisoning

Answer: Cereulide

Extra: Cereulide is a heat-stable, preformed toxin (emetic type). The diarrheal type of B. cereus food poisoning is caused by heat-labile enterotoxins produced in the gut.

Flashcard 432: Toxic Shock Like Syndrome is caused by what organism? _____

Answer: GAS (S. pyogenes)

Flashcard 433: _____ involves bacteria extending a sex pilus, allowing exchange of DNA between two different strains

Answer: Conjugation

Flashcard 434: Which comma-shaped bacteria is endemic to developing countries? _____

Answer: Vibrio spp.

Flashcard 435: _____ requires selective media such as Middlebrook medium and rapid automated broth cultures

Answer: M. tuberculosis

Flashcard 436: Streptococcus agalactiae (GBS) is catalase _____

Answer: negative

Flashcard 437: H. influenzae is considered a fastidious bacteria because it needs _____ and hematin (factor X) to grow

Answer: NAD+ (factor V)

Flashcard 438: Exotoxin generates a(n) _____ antibody response

Answer: strong

Flashcard 439: Streptococcus pneumoniae is bile-_____

Answer: soluble

Flashcard 440: Peptidoglycan cell walls have repeating _____ oligopeptides

Answer: D-alanyl-D-alanine