Page 28 - MNU microbiology theoritical 2025

General Microbiology & Immunology (PM 401) Second level Semester 4 2024/2025

A- Choose the best correct answer in each of the following

1- What is a cluster of polar flagella at one end called?
(a) Petritrichous

(b) Monotrichous
(c) Amphitrichous
(d) Lophotrichous

2- Flagella in bacteria enable bacteria to
(a) reproduce
(b) locomote

(c) Adhere to the tissue surfaces
(d) Thrive in the nutrient agar

3- An outer covering in some bacteria that protects them from phagocytosis
by host cells is
(a) capsule

(b) cell wall
(c) flagellum
(d) peptidoglycan

4- Which of these is a major difference between pili and fimbriae?
(a) Pili are longer.

(b) Fimbriae are longer.
(c) There are more pili than fimbriae.
(d) Typically, a cell only has one or two fimbriae.

General Microbiology & Immunology (PM 401) theoretical handbook Page 17