1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?
A.   Temperature of about 25o C
B.   Temperature of about 5o C
C.   Relative humidity of about 5%
D.   Relative humidity of about 95%
E.   A shady place
F.   A brightly illuminated place
Choose the answer from the following options.
A
B, C and F only
B
A, C and E only
C
A, D and E only
D
B, D and E only
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia
A
can induce root nodules on many plant species
B
can fix nitrogen in the free-living state
C
cannot fix specialized vesicles in which the nitrogenase is protected from oxygen by a chemical barrier involving triterpene hopanoids
D
like Rhizobium, it usually infects its host plant through root hair deformation and stimulates cell proliferation in the host's cortex.
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
For retting of jute the fermenting microbe used is
A
methanophilic bacteria
B
butyric acid bacteria
C
Helicobactor pylori
D
Streptococcus lactin.
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Basophilic prokaryotes
A
grow and multiply in very deep marine sediments
B
occur in water containing high concentrations of barium hydroxide
C
readily grow and divide in sea water enriched in any soluble salt of barium
D
grow slowly in highly alkaline frozen lakes at high altitudes.
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