Bacteria — Flashcards

Flashcard 571: Some bacteria secrete a _____, allowing the bacteria to stick to a surface

Answer: biofilm (not glycocalyx)

Flashcard 572: _____ is the transfer of DNA between bacteria using 'sex pili'

Answer: Conjugation

Flashcard 573: What is the shape of Yersinia?_____

Answer: Rod

Flashcard 574: Direct transmission of Brucella spp. results from contact with _____

Answer: farm animals (cows, pigs, goats, sheep are the reservoirs)

Flashcard 575: Which type of cells on wet mount signify Gardnerella vaginalis?_____

Answer: Clue cells

Flashcard 576: Which complement proteins are part of the membrane attack complex (MAC)?_____

Answer: C5b-C9

Flashcard 577: Enterococci spp. are _____ anaerobes

Answer: facultative

Flashcard 578: The process of inactivation of self-propagating biological entities is known as _____

Answer: Sterilization

Flashcard 579: In which phase of bacterial growth do antibiotics have their greatest effect?

Answer: Log phase (Exponential phase)

Extra: Antibiotics, especially cell wall synthesis inhibitors (e.g., beta-lactams), are most effective during the log phase because this is when bacteria are actively dividing and synthesizing new cell wall components.

Flashcard 580: Does Vibrio cholerae invade the intestinal wall?_____

Answer: No