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1000 Microbiology
Quiz 2
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Q.1
Cryptococcosis is a disease of ________________
a) viral infection
b) mycotic infection
c) parasitic infection
d) bacterial infection
Q.2
Which among the following is a pathogenic algae for humans?
a) Cephaleuros
b) Acanthopeltis
c) Chlorella
d) Prototheca
Q.3
Chrysolaminarin is the reserved food of ___________________
a) Bacillariophycophyta
b) Xanthophycophyta
c) Chlorophycophyta
d) Phaeophycophyta
Q.4
Protozoa that eat other organisms are known as _______________
a) parasitic
b) mutualistic
c) holozoic
d) saprophytic
Q.5
Plasmodium divides by which of the following method most commonly?
a) Regeneration
b) Budding
c) Binary fission
d) Multiple fission
Q.6
Which of the following is a family of lambda phage viruses?
a) Styloviridae
b) Corticoviridae
c) Microviridae
d) Pedoviridae
Q.7
What does a viral DNA becomes after being associated with the bacterial chromosome?
a) plasmid
b) plaque
c) prophage
d) gene
Q.8
Vaccination was invented by ____________
a) Watson
b) Jenner
c) Crick
d) Pasteur
Q.9
For which viral disease, vaccine has been recently developed through the use of tissue culture?
a) S mallpox
b) Rabies
c) Mumps
d) Measles
Q.10
Which of the following inhibits DNA replication?
a) x-rays
b) gamma rays
c) UV light
d) cathode rays
Q.11
Which was the first disease for which a chemotherapeutic agent was used?
a) Small pox
b) Syphilis
c) AIDS
d) Malaria
Q.12
Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped.
a) elongated
b) irregular
c) rod shaped
d) spherical
Q.13
Tyrocidines are more effective against ___________________
a) Gram-negative organisms
b) Gram-positive organisms
c) Spirochetes
d) Mycoplasmas
Q.14
Which of the following is the most accurate method for microbial assay of antibiotics?
a) Chemical and biological assay
b) Biological assay
c) Chemical assay
d) Physical assay
Q.15
Which among the following is not an ammonia-oxidizing bacteria?
a) Nitrospina gracilis
b) Nitrosococcus oceanus
c) Nitrosomonas europaea
d) Nitrosovibrio tenuis
Q.16
Cellulose is degraded to cellobiose by the enzyme __________________
a) cellulose dehydrogenase
b) hexokinase
c) beta-glucosidase
d) cellulase
Q.17
Sulphates are reduced to hydrogen sulphide by _____________________
a) Thiobacillus thiooxidans
b) Rhodospirillum
c) Desulfotomaculum sp.
d) Photosynthetic sulfur bacteria
Q.18
The microorganisms from lakes and rivers can grow at a salt concentration of _________
a) above 1 percent
b) below 1 percent
c) 2.5 to 4 percent
d) 5 percent
Q.19
In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms?
a) viruses
b) coliforms
c) fecal streptococci
d) appendaged bacteria
Q.20
In which of the following treatment involve oxidation of organic constituents of the wastewater?
a) Final treatment
b) Advanced treatment
c) Secondary treatment
d) Primary treatment
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