A 24-Year-Old Man Develops Mild, Nonexudative Pharyngitis Shortly After Travel

question 72

Multiple Choice

A 24-year-old man develops mild, nonexudative pharyngitis shortly after travel to Eastern Europe.  Throat swab culture in tellurite-containing, selective media yields black, iridescent colonies.  Microscopy shows club-shaped, gram-positive bacilli in a palisade arrangement, which are identified as nonpathogenic Corynebacterium diphtheriae.  These bacteria can acquire virulence to become pathogenic through which of the following mechanisms?

• A)Bacterial conjugation permitting pili expression
• B)Chromosomal mutation permitting endotoxin production
• C)Environmental influences permitting toxin synthesis
• D)Phage conversion permitting exotoxin production
• E)Transformation permitting capsule formation

---

Definitions:

Relative Permanence

The quality of a negotiable instrument that ensures its longevity.

Writing Requirement

The writing requirement refers to legal stipulations that certain types of agreements or contracts must be documented in written form to be legally valid.

Drawer

A drawer is a person or entity that issues or writes a check or draft, instructing a bank or similar institution to pay a specific amount of money to a designated party.

Drawee

The party on whom a cheque or draft is drawn, responsible for paying the specified amount on the instrument.