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MCQs

Total Questions : 67 | Page 3 of 7 pages
Question 21. Antoine Van Leeuwenhoek described microbes as bacteria and protozoa and called them as
  1.    animalcules
  2.    macromolecules
  3.    micromolecules
  4.    planolecules
 Discuss Question
Answer: Option A. -> animalcules
Answer: (a).animalcules
Question 22. Dormant, resistant bodies which develop during differentiation of vegetative cells are
  1.    pili
  2.    cysts
  3.    buds
  4.    spores
 Discuss Question
Answer: Option B. -> cysts
Answer: (b).cysts
Question 23. Cell membrane of a bacteria invaginates in to cytoplasm and form a structure called
  1.    mesosomes
  2.    ribosomes
  3.    spores
  4.    plasmids
 Discuss Question
Answer: Option A. -> mesosomes
Answer: (a).mesosomes
Question 24. Chemical substances which act as inhibitor for growth of microorganisms are called
  1.    antibodies
  2.    antiseptics
  3.    antibiotics
  4.    anti inflammatory
 Discuss Question
Answer: Option B. -> antiseptics
Answer: (b).antiseptics
Question 25. Metabolically dormant bodies of bacteria are resistant to adverse physical environmental conditions are the
  1.    spores
  2.    mesosome
  3.    ribosomes
  4.    plasmids
 Discuss Question
Answer: Option A. -> spores
Answer: (a).spores
Question 26. Other name for "blue green algae" is
  1.    cyanobacteria
  2.    green bacteria
  3.    blue bacteria
  4.    brunobacteria
 Discuss Question
Answer: Option A. -> cyanobacteria
Answer: (a).cyanobacteria
Question 27. Effect that instantly kills microbes is
  1.    sterilization
  2.    microbicidal
  3.    antiseptic
  4.    antibiotic
 Discuss Question
Answer: Option B. -> microbicidal
Answer: (b).microbicidal
Question 28. Phase in which death rate is equal to reproduction and multiplication rate is
  1.    action phase
  2.    stationary phase
  3.    medial phase
  4.    cease phase
 Discuss Question
Answer: Option B. -> stationary phase
Answer: (b).stationary phase
Question 29. Bacteria which obtain their food from dead organic matter called as
  1.    heterotrophs
  2.    autotrophs
  3.    saprophytic
  4.    symbiotic
 Discuss Question
Answer: Option C. -> saprophytic
Answer: (c).saprophytic
Question 30. When rod shaped bacteria appears to be in pair arrangement it is termed as
  1.    staphylococci
  2.    bacillus
  3.    diplobacilli
  4.    streptobaccili
 Discuss Question
Answer: Option C. -> diplobacilli
Answer: (c).diplobacilli

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