Microbiology exams Questions:
Ques. Food can be kept unspoiled at
(a) High temperature
(b) Low temperature
(c) Osmotic temperature
(d) All the above
Ques. Who is the father of microbiology?
(a) Antony Von Leeuwenhock
(b) Alexander Flemming
(c) Anoton De Berry
(d) Robert Koch
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Ques. RNA containing viruses belong to
(a) Ribocubica
(b) Ribobinala
(c) Ribovira
(d) Deoxyvira
Ques. Which is not help in N2 fixation
(a) Anabaena
(b) Nostoc
(c) Oscillatoria
(d) Rhizobium
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Ques. Sterilisation by autoclaving is carried out to
(a) Kill bacteria and other pathogens
(b) Kill viruses
(c) Kill bacteria and enzymes
(d) Inactivate enzymes
Ques. Circular DNA molecule occurs in
(a) Viruses
(b) Bacteria, chloroplasts and mitochondria
(c) Bacteria and chloroplasts only
(d) Bacteria only
Ques. Some viruses have only RNA but no DNA this would indicate that
(a) Their nucleic acid must combine with host DNA for virus duplication
(b) These viruses can not replicate
(c) RNA too can transmit hereditary information
(d) The viruses have non heritable information
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Ques. Cause of ‘Mad Cow’ disease of England
(a) Virions
(b) Mycoplasma
(c) Scrapie Protein
(d) Viral protein
Ques. The genetic material in viruses is
(a) Only RNA
(b) Only DNA
(c) RNA and DNA both
(d) RNA or DNA i.e. one nucleic acid in a virus
Ques. Viruses multiply in
(a) Bacteria only
(b) All living cells
(c) Specific living cells
(d) Rotten food
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Ques. Genes are packed in bacterial chromosome by
(a) Acid proteins
(b) Histones
(c) Basic proteins
(d) Actin
Ques. Which one of the following is also algae
(a) Cyanobacteria
(b) Rhodospirillum
(c) Green bacteria
(d) Purple bacteria
Ques. Antibiotics cure diseases by
(a) Removing pain
(b) Competitive inhibition
(c) Turning the pathogen out of the body
(d) Fighting with the disease causing organism
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Ques. Elementary cell body in mycoplasma perform the function of
(a) Metabolism
(b) Excretion
(c) Reproduction
(d) Respiration
Ques. Which of the following is not caused by a bacterium
(a) Typhoid
(b) Tetanus
(c) Kwashiorker
(d) Diphtheria
Ques. The water of Ganga river is pure due to the presence of
(a) Cyanophages
(b) Hydrophytes
(c) Bacteria
(d) Bacteriophages
Ques. Nitrogen fixation organism is
(a) Nitrosomonas
(b) E.coli
(c) Nitrobactor
(d) Rhizobium and Azotobacter
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Ques. ‘Citrus canker’ is caused by a
(a) Fungus
(b) Bacterium
(c) Virus
(d) Nematoda
Ques. Pulse polio immunization is being carried out with the aim
(a) To treat polio
(b) To prevent deformities due to polio
(c) To contain polio
(d) To eradicate polio
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Ques. Bioluminiscence is caused by oxidation of
(a) Cytochroms
(b) Luciferin
(c) Phytochromes
(d) Chlorophyll
Ques. Edward Jenner discovered
(a) Vaccination against chicken pox
(b) Vaccination against small pox
(c) Immunization against chicken pox
(d) Immunization against small pox
Ques. A naked RNA particle causing the symptoms like that of a virus disease is known as
(a) Viroid
(b) Virion
(c) Viral
(d) None of these
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Ques. Streptomyces venezuelae yields
(a) Aureomycin
(b) Chloromycetin
(c) Tetracycline
(d) Streptomycin
Ques. Which of the following fixes COÂ2Â in carbohydrates?
(a) Bacillus
(b) Rhizobium
(c) Nitrobacter
(d) Rhodospirillum
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Ques. Azotobacter and Bacillus polymyxa are the examples of
(a) Symbiotic nitrogen fixers
(b) Non-symbiotic nitrogen fixers
(c) Disease causing bacteria
(d) Ammonifying bacteria
Ques. The microbial conversion of ammonia to nitrate is called as
(a) Ammonification
(b) Nitrification
(c) Denitrification
(d) Nitrogen fixation (N2-fixation)
