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Chapter No 2 :BiologIcal Molecules (126 MCQ`S)

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  1. It’s the most abundant biological molecule found in cell?
    1. Lipids
    2. Proteins
    3. Carbohydrates
    4. Water
      5. Show Answer
      Answer: D
      Explanation:
      • N/A
  2. What are the roles played by water in living organisms?
    1. Provides medium for reactions
    2. Act as raw material
    3. Takes part in reactions directly
    4. All of these
      5. Show Answer
      Answer: D
      Explanation:
      • As water is universal solvent
  3. Water facilitates biochemical reactions due to all of the following except:
    1. Ionic substances are dissociated in water
    2. Particles of non-polar substances having charged groups are dispersed
    3. Substances are in more favourable state of random motions
    4. Activation energy is lowered
      5. Show Answer
      Answer: D
      Explanation:
      • Activation energy is related to enzymes
  4. Water content released on hydrolysis is highest in which of the following molecules?
    1. Polysaccharides
    2. Lipids
    3. Oligosaccharides
    4. Monosaccharides
      5. Show Answer
      Answer: A
      Explanation:
      • Due to large number of glycosidic linkage
  5. The simplest aldo-sugar is:
    1. Glyceraldehyde
    2. Glucoheptose
    3. Dihydroxyacetone
    4. Sedoheptulose
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  6. When in solution the ring structure formed by fructose is?
    1. Ribofuranose
    2. Glucopyranose
    3. Fructofuranose
    4. Erythrofuranose
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  7. Energy required for the synthesis of 10g of glucose is:
    1. 717.6 KCal
    2. 71.76 KCal
    3. 7176 KCal
    4. 12,916.8 KCal
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  8. Which of the following shows a peptide bond?
    1. C--O Linkage
    2. N--C linkage
    3. C--N linkage
    4. C--H linkage
      5. Show Answer
      Answer: C
      Explanation:
      • N/A
  9. Most abundant carbohydrate in nature is:
    1. Glucose
    2. Phospholipids
    3. Cellulose
    4. Rubisco
      5. Show Answer
      Answer: C
      Explanation:
      • N/A
  10. Bond stabilizing the structure of complex carbohydrates is:
    1. Glycosidic bond
    2. Peptide bond
    3. Ester bond
    4. Phosphodiester bond
      5. Show Answer
      Answer: A
      Explanation:
      • N/A

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