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MCQs

Total Questions : 139 | Page 9 of 14 pages
Question 81. From which of following Chemotroph organisms obtain energy?
  1.    oxygen
  2.    sulphur
  3.    chemicals
  4.    CO₂
 Discuss Question
Answer: Option C. -> chemicals
Answer: (c).chemicals
Question 82. Prokaryotic cells typically have a diameter of about how many micrometers?
  1.    5
  2.    100
  3.    200
  4.    300
 Discuss Question
Answer: Option A. -> 5
Answer: (a).5
Question 83. Methanogens release which of following compounds as a by-product of their metabolism?
  1.    ammonia
  2.    sulphur
  3.    methane
  4.    nitrogen
 Discuss Question
Answer: Option C. -> methane
Answer: (c).methane
Question 84. Cocci present in chains are called
  1.    monococci
  2.    diplococci
  3.    streptococci
  4.    staphylococci
 Discuss Question
Answer: Option C. -> streptococci
Answer: (c).streptococci
Question 85. Which of following scientists invented Gram stain technique?
  1.    Mendel
  2.    Watson
  3.    Hans Christian
  4.    Marie curie
 Discuss Question
Answer: Option C. -> Hans Christian
Answer: (c).Hans Christian
Question 86. Hfr cell has F factor in its
  1.    plasmid
  2.    chromosome
  3.    cell wall
  4.    ribosomes
 Discuss Question
Answer: Option B. -> chromosome
Answer: (b).chromosome
Question 87. How many prokaryotic species have been assigned names so far by scientists?
  1.    10500
  2.    12000
  3.    1000
  4.    30000
 Discuss Question
Answer: Option A. -> 10500
Answer: (a).10500
Question 88. Appendages that pull two cells together is called
  1.    Pilli
  2.    pseudopods
  3.    fimbriae
  4.    hair
 Discuss Question
Answer: Option A. -> Pilli
Answer: (a).Pilli
Question 89. Rhizobium resides in roots of which of following plants?
  1.    Genisteae
  2.    non leguminous
  3.    flowering
  4.    leguminous
 Discuss Question
Answer: Option D. -> leguminous
Answer: (d).leguminous
Question 90. Which of following is used for respiration in facultative anaerobes if oxygen is absent?
  1.    sulphur
  2.    light
  3.    heat
  4.    fermentation
 Discuss Question
Answer: Option D. -> fermentation
Answer: (d).fermentation

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