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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