Q.31)-The samllest size of a cell that can be seen with naked eye is
  • 1 micron
  • 10 micron
  • 100 micron
  • 1000 micron
Q.32)-Which of the following micro-organisms is used in milk-curdiling
  • Acetabacter
  • Leuconostoc
  • Bacillus
  • Lactobacillus
Q.33)-Plague' is caused by____________
  • Bacteria
  • Protozoa
  • Virus
  • All of the above
Q.34)-An Antigen is
  • The result of Antibody
  • The opposite of Antibody
  • The stimulus of Antibody
  • The residue of an Antibody
Q.35)-AIDS virus destroys
  • Lymphocytes
  • Monocytes
  • Neutrophils
  • Basophils
Q.36)-Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills
  • Pseudomonas
  • Agrobacterium
  • Clostridium
  • Nitrosomonas
Q.37)-Rinderpest disease of cattle is caused by
  • Insects
  • Bacteria
  • Virus
  • protozoa
Q.38)-Bacteriophage was discovered by
  • Felix d' Herelle and Frederick Twort
  • Kluyver and Niel
  • Paul Ehrlich
  • Burrill and Smith
Q.39)-Bacterial cells do not have
  • Cell wall
  • Plasma membrane
  • Ribosome
  • Mitochondria
Q.40)-Rhizobuim is a kind of
  • Photosynthetic bacterias
  • Symbiotic bacteria
  • Parasitic bacteria
  • Saprophytic bacteria