Microbiology: 1. Nitrogen fixing organisms include a) Azotobacter b) Rhizobium c
ID: 74564 • Letter: M
Question
Microbiology:
1. Nitrogen fixing organisms include
a) Azotobacter
b) Rhizobium
c) Nostoc
d) All of the above
2. The lowest infective dose known is
a) 1 in some parasitic diseases
b) 80 in Shigella
c) I in rhinoviridae
d) A and C
3. Examples of animal parasitism would include
a) Taenia sppp
b) Trichiuris
c) Sarcoptes
d) All of the above
4. Examples of an anaerobic gram positive endospore producing bacteria include
a) Clostridum tetani
b) Bacillus anthracis
c) Bacillus megatherium
d) All of the above
5. The following are not acid fast
a) Mycobacteria spp.
b) Causative agent of plague
c) Causative agent of Buruli ulcer
d) A and C
Explanation / Answer
1. Nitrogen fixing organisms include:
d) All of the above
Azotobacter,Rhizobium and Nostoc are all examples of nitrogen fixing organisms which fix atmospheric nitrogen.
2. The lowest infective dose known is:
b) 80 in Shigella
3. Examples of animal parasitism would include:
d) All of the above
Taenia sp, Trichiuris and Sarcoptes are all animal parasites. Taenia sp, Trichiuris are human parasites whereas Sarcoptes is a parasite whose host is domestic animals.
4. Examples of an anaerobic gram positive endospore producing bacteria include:
a) Clostridum tetani
Bacillus anthracis can be both aerobic or anaerobic and Bacillus megatherium is aerobic spore forming bacteria.
5. The following are not acid fast:
b) Causative agent of plague
Causative agent of plague is Yersinia pestis which is not a acid fast bacteria.Mycobacteria spp and causative agent of Buruli ulcer also belongs to Mycobacteria sp. and are acid fast.