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MCQs

Total Questions : 274 | Page 4 of 28 pages
Question 31. Surface area/volume ratio of bacteria is exceedingly low compared to the same ratio for larger organisms of similar shape.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 32. Bacteria with less than a complete twist or comma shaped is known as?
  1.    spirilla
  2.    helical
  3.    vibrioid
  4.    spirochetes
 Discuss Question
Answer: Option C. -> vibrioid
Answer: (c).vibrioid
Question 33. Bacteria having cluster of flagella at both poles of cells are known as?
  1.    Lophotrichous
  2.    Peritrichous
  3.    Amphitrichous
  4.    Monotrichous
 Discuss Question
Answer: Option C. -> Amphitrichous
Answer: (c).Amphitrichous
Question 34. Which of the following are functions of stalk?
  1.    nutrient absorption
  2.    motility
  3.    attachment of the cells to surfaces
  4.    human infection
 Discuss Question
Answer: Option C. -> attachment of the cells to surfaces
Answer: (c).attachment of the cells to surfaces
Question 35. Salmonella typhi has which type of flagella arrangement?
  1.    Amphitrichous
  2.    Peritrichous
  3.    Monotrichous
  4.    Lophotrichous
 Discuss Question
Answer: Option B. -> Peritrichous
Answer: (b).Peritrichous
Question 36. Peptidoglycan accounts for __________ of the dry weight of cell wall in many gram positive bacteria
  1.    50% or more
  2.    About 10%
  3.    11%+ 0.22%
  4.    About 20%
 Discuss Question
Answer: Option A. -> 50% or more
Answer: (a).50% or more
Question 37. The cell wall of
  1.    gram-positive bacteria are thicker than gram-negative bacteria
  2.    gram-negative bacteria are thicker than gram-positive bacteria
  3.    both have same thickness but composition is different
  4.    none of these
 Discuss Question
Answer: Option A. -> gram-positive bacteria are thicker than gram-negative bacteria
Answer: (a).gram-positive bacteria are thicker than gram-negative bacteria
Question 38. Bacteria having no flagella are unable to
  1.    move
  2.    reproduce
  3.    stick to tissue surfaces
  4.    grow in nutrient agar
 Discuss Question
Answer: Option A. -> move
Answer: (a).move
Question 39. Which of the following is true about cell wall of gram-positive bacteria?
  1.    It consists of multiple layers
  2.    It is thicker than that associated with gram-negative bacteria
  3.    It contains teichoic acids
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 40. The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as
  1.    lipase
  2.    lysozyme
  3.    pectinase
  4.    peroxidase
 Discuss Question
Answer: Option B. -> lysozyme
Answer: (b).lysozyme

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