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MCQs

Total Questions : 82 | Page 8 of 9 pages
Question 71. The breakdown of protiens and amino acids to form urea is an example of reaction that is
  1.    Anabolic
  2.    Catabolic
  3.    Oxidative
  4.    Reduction
 Discuss Question
Answer: Option B. -> Catabolic
Answer: (b).Catabolic
Question 72. In living organisms , the mechanism for synthesis of new substances by using energy is
  1.    Anabolic
  2.    Catabolic
  3.    Respiratory
  4.    Excretory
 Discuss Question
Answer: Option A. -> Anabolic
Answer: (a).Anabolic
Question 73. Yellowing of plants is due to absence of
  1.    calcium
  2.    chlorophyll
  3.    magnesium
  4.    nitrogen
 Discuss Question
Answer: Option C. -> magnesium
Answer: (c).magnesium
Question 74. Oxygen which is released during process of photosynthesis comes from
  1.    hydrogen
  2.    leaves
  3.    water
  4.    oxygen
 Discuss Question
Answer: Option C. -> water
Answer: (c).water
Question 75. Phases of Calvin cycle involves
  1.    carbon fixation
  2.    reduction
  3.    regeneration
  4.    All of the Above
 Discuss Question
Answer: Option D. -> All of the Above
Answer: (d).All of the Above
Question 76. Chlorophyll (a) has ability to absorb wave length of light
  1.    blue-red
  2.    blue-green
  3.    yellow green
  4.    yellow blue
 Discuss Question
Answer: Option B. -> blue-green
Answer: (b).blue-green
Question 77. Tail attached to pyrrole ring is called
  1.    porpyrin
  2.    tail
  3.    phytol
  4.    nostale
 Discuss Question
Answer: Option C. -> phytol
Answer: (c).phytol
Question 78. Dense fluid filled region which helps in producing carbohydrate molecules is called
  1.    lumen
  2.    carpel
  3.    stroma
  4.    grana
 Discuss Question
Answer: Option C. -> stroma
Answer: (c).stroma
Question 79. Type of respiration which humans adopt in severe physical activities is
  1.    aerobic
  2.    anaerobic
  3.    fermentation
  4.    accumulation
 Discuss Question
Answer: Option B. -> anaerobic
Answer: (b).anaerobic
Question 80. Reactions which are light-independent are termed as
  1.    light reactions
  2.    dark reactions
  3.    gaseous reactions
  4.    dull reactions
 Discuss Question
Answer: Option B. -> dark reactions
Answer: (b).dark reactions

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