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MCQs

Total Questions : 274 | Page 9 of 28 pages
Question 81. The L Ring in a Gram-Negative bacterium flagella is associated with_________
  1.    Peptidogycan
  2.    Outer Membrane
  3.    Cytoplasmic Membrane
  4.    Cell Membrane
 Discuss Question
Answer: Option B. -> Outer Membrane
Answer: (b).Outer Membrane
Question 82. Prosthecae helps in __________
  1.    motility
  2.    nutrient absorption and attachment to surfaces
  3.    human infection
  4.    protection from environment
 Discuss Question
Answer: Option B. -> nutrient absorption and attachment to surfaces
Answer: (b).nutrient absorption and attachment to surfaces
Question 83. The capsule of Klebsiella pneumoniae is composed of heteropolysaccharides.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 84. F pilus has a major role as___________
  1.    motility of the cell
  2.    port of entry of genetic material during mating
  3.    attachment to host cell
  4.    human infection
 Discuss Question
Answer: Option B. -> port of entry of genetic material during mating
Answer: (b).port of entry of genetic material during mating
Question 85. When a bacteria swim towards a chemical, it is termed as__________
  1.    positive chemotaxis
  2.    phototaxis
  3.    negative chemotaxis
  4.    magnetotaxis
 Discuss Question
Answer: Option A. -> positive chemotaxis
Answer: (a).positive chemotaxis
Question 86. Peptidoglycan layer is present in large quantity in?
  1.    Gram-positive bacteria
  2.    Gram-negative bacteria
  3.    Fungi
  4.    Algae
 Discuss Question
Answer: Option A. -> Gram-positive bacteria
Answer: (a).Gram-positive bacteria
Question 87. Peptidoglycan is made up of __________
  1.    N-acetylglucosamine
  2.    N-acetylmuramic acid
  3.    N-acetylglucosamine, N-acetylmuramic acid
  4.    N-acetylglucosamine,N-acetylmuramic acid,amino acids
 Discuss Question
Answer: Option D. -> N-acetylglucosamine,N-acetylmuramic acid,amino acids
Answer: (d).N-acetylglucosamine,N-acetylmuramic acid,amino acids
Question 88. Teichoic acid present in Gram-positive bacteria can bind to which ion?
  1.    Fe ions
  2.    Phosphorus ions
  3.    Mg ions
  4.    Sulphur ions
 Discuss Question
Answer: Option C. -> Mg ions
Answer: (c).Mg ions
Question 89. Which type of force drives the flagellar motion?
  1.    Protonmotive force
  2.    ATP driven
  3.    Protonmotive and ATP driven
  4.    No protonmotive nor ATP driven
 Discuss Question
Answer: Option A. -> Protonmotive force
Answer: (a).Protonmotive force
Question 90. Which among the following acts as receptors for bacteriophage attachment in Gram-negative bacteria?
  1.    Cilia
  2.    O antigens
  3.    Lipid A
  4.    Teichoic acid
 Discuss Question
Answer: Option B. -> O antigens
Answer: (b).O antigens

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