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MCQs

Total Questions : 274 | Page 27 of 28 pages
Question 261. . The cell walls of Gram positive bacteria contain two modified sugar, viz. N- acetylgucosamine (NAG) and N- acetylmuramic acid (NAM). They are covalently linked by
  1.    α- 1,4-glycosidic bond
  2.    β-1,6-glycosidic bond
  3.    α- 1,6-glycosidic bond
  4.    β- 1,4-glycosidic bond
 Discuss Question
Answer: Option D. -> β- 1,4-glycosidic bond
Question 262. . The location where the bacterial chromosome concentrates is called
  1.    nucleus
  2.    nuclein
  3.    nucleoid
  4.    nucleose
 Discuss Question
Answer: Option C. -> nucleoid
Question 263. . Which of the following organism has sterols in their cytoplasmic membrane?
  1.    Clostridum
  2.    Proteus
  3.    Mycoplasma
  4.    Bacillius
 Discuss Question
Answer: Option C. -> Mycoplasma
Question 264. . Which of the following has Chinese letter arrangement?
  1.    Bacillus anthracis
  2.    Mycobacterium tuberculosis
  3.    Clostridium tetani
  4.    Corynebacterium diphtheriae
 Discuss Question
Answer: Option D. -> Corynebacterium diphtheriae
Question 265. . Which of the following is analogous to mesosomes of bacteria?
  1.    Mitochondria of eukaryotes
  2.    Golgi apparatus of eukaryotes
  3.    Lysosomes of eukaryotes
  4.    None of these
 Discuss Question
Answer: Option A. -> Mitochondria of eukaryotes
Question 266. . The other name for peptidoglycan is
  1.    mucopeptide
  2.    murein
  3.    both (a) & (b)
  4.    none of these
 Discuss Question
Answer: Option C. -> both (a) & (b)
Question 267. . Which of the following structure(s) is /are external to cell wall?
  1.    Flagella
  2.    Stalks
  3.    Sheath
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 268. . In which of the following, lipo-polysaccharide is a major constituent of outer membrane of the cellwall?
  1.    Gram-positive bacteria
  2.    Gram-negative bacteria
  3.    Fungi
  4.    None of these
 Discuss Question
Answer: Option B. -> Gram-negative bacteria
Question 269. . 
Cyanobacteria have
  1.    a gram-positive cell wall
  2.    a gram-negative cell wall
  3.    Neither (a) nor (b)
  4.    No cell wall
 Discuss Question
Answer: Option B. -> a gram-negative cell wall
Question 270. . Which of the following may be most likely to be missing from a gram-positive bacterium?
  1.    Penicillin binding protein
  2.    Peptidoglycan
  3.    Lipopolysaccharide
  4.    Phospholipid bilayer membrane
 Discuss Question
Answer: Option C. -> Lipopolysaccharide

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