Bacteria are microscopic organism first seen by ………
a) L. Pasteur
b) R. Koch
c) Leeuwenhoek
d) A. Flemming
Very little was known about bacteria until the work of ……..
a) L. Pasteur
b) R. Koch
c) Darwin
d) both a and b
Which of the following are the most abundant organisms on planet earth?
a) Archaea
b) bacteria
c) plants
d) animals
Explanation: there are more bacteria in our mouth than mammals living on earth
The classification of bacteria is based on
a) morphology and mode of nutrition
b) biochemical characteristics
c) genetic characteristics
d) all of these
Bacteria are classified into………major groups.
a) two
b) three
c) four
d) five
Explanation: Proteobacteria, Chlamydias, Spirochetes, Gram- Positive and Cyanobacteria
Which of the following is/are the major group/s of bacteria?
a) proteobacteria and chlamydias
b) spirochetes and cyanobacteria
c) gram-positive bacteria
d) all of these
