Features of fimbrae, except-
|A||Also called pili|
|B||Seen in gram negative bacilli|
|C||Hair like appendages|
|D||Shorter and thinner than flagellae|
|E||None of the above|
a. Pili are slender fiber-like structures (1-1.5 micron long) present on the surface of bacteria
b. They are of two types: common pili which are only in gram negative bacteria and that play an important role in adhesion.
c. Sex pili are present on both gram positive and negative bacteria and mediate conjugation.
d. They are antigenic and can be seen under electron microscope or by hemagglutination.