Type I and Type IV pili both
A) are similar in mode of secretion.
B) are mannose resistant.
C) have an assembly that does not involve the secA general secretory pathway.
D) are encoded by a pathogenicity island.
E) are exclusively used for pathogenesis.

Question

Quizplus · Accepted Answer

Both Type I and Type IV pili have an assembly that does not involve the secA general secretory pathway. The other statements are incorrect - Type I pili are mannose-sensitive and Type IV pili are not exclusively used for pathogenesis, and are also found in non-pathogenic bacteria. Neither are exclusively encoded by a pathogenicity island.

Type I and Type IV Pili Both