Most bacteria are about……micrometer in length.
a) 1-2
b) 2-10
c) 12-20
d) 50-100
Most bacteria are about……micrometer in diameter.
a) 0.2 - 2
b) 2-10
c) 1.2 – 5.0
d) 5.0 – 8.5
The shape of the bacterial cell is controlled by its ……..
a) rigid cell wall
b) outer membrane
c) plasma membrane
d) capsule
On the basis of shape, bacteria appear in…….different forms.
a) two
b) three
c) four
d) five
Explanation: 1. Cocci, 2. Bacilli and
3. Spirilla
Which of the following are spherical
bacteria and are non-motile?
a) spirilla
b) bacilli
c) cocci
d) all of these
Explanation: they lack flagella. Diplococci (2 bacteria) streptococci (chain)
Which of the following are rod-shaped bacteria?
a) spirilla
b) bacilli
c) cocci
d) all of these
Explanation: Diplobacilli (2 bacteria) streptobacilli (chain)
