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

  1. For coding the amino acids in β-chain of hemoglobin the mRNA should have how many nucleotides length?
    1. 300
    2. 150
    3. 423
    4. 438
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  2. Following is not the component of RNA:
    1. Deoxyribose
    2. Phosphate group
    3. A & U
    4. C & G
    5. Show Answer
      Answer: A
      Explanation:
      • N/A
  3. Synthesis of RNA takes place in cells from DNA by the process of:
    1. RNA Replication
    2. DNA Replication
    3. Transcription
    4. Translation
    5. Show Answer
      Answer: C
      Explanation:
      • N/A
  4. Nucleic acids are named because of their:
    1. Discovery from nucleus
    2. Occurrence in nucleus
    3. Acidic nature
    4. Both B & C
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  5. Which of the following act as coenzymes in several oxidation reduction reactions?
    1. ATP
    2. NAD+
    3. FAD+
    4. Both B & C
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  6. ATP act as coenzyme with many enzymes providing source of energy because it has ________ high energy bonds:
    1. 1
    2. 2
    3. 3
    4. 4
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  7. In a nucleotide phosphate group is attached at C5’ of pentose sugar through:
    1. N-glycosidic bond
    2. Phosphoester bond
    3. Phosphodiester bond
    4. Phosphodiester bond
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  8. Mostly enzymes are:
    1. Fibrous proteins
    2. Globular proteins
    3. Carbohydrates
    4. RNA
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  9. Enzymes are highly specific to:
    1. pH
    2. Temperature
    3. Substrate & Enzyme concentration
    4. All of these
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  10. Enzymes are globular proteins that:
    1. Initiate biochemical reactions
    2. Accelerate biochemical reactions
    3. Lower activation energy for reactions
    4. Perform all the given roles
    5. Show Answer
      Answer: D
      Explanation:
      • N/A

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