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

  1. Structure of enzyme consists of two major parts, one is active site and other is globular structure, this globular structure is maintained by ______________ in enzyme molecule.
    1. Few amino acids
    2. Bulk of amino acids
    3. Hundreds of amino acids
    4. Millions of amino acids
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  2. Every enzyme accelerates the rate of a chemical substance that binds with its specific charge and shape bearing portion of structure, that chemical is:
    1. Binding site
    2. Catalytic site
    3. Inhibitor
    4. Substrate
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  3. Enzyme involved in protein synthesis is the integral part of:
    1. Ribosomes
    2. Small ribosomal subunit
    3. Large ribosomal subunit
    4. RER
    5. Show Answer
      Answer: C
      Explanation:
      • N/A
  4. Enzyme responsible for breakdown of glucose into pyruvate are present in:
    1. Mitochondria
    2. Chloroplast
    3. F1 particles
    4. Cytosol
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  5. According to induce fit model active site of enzyme is:
    1. Specific for a group of related substrates
    2. Specific for a single substrate
    3. Rigid structure
    4. Flexible for many different types of substrates
    5. Show Answer
      Answer: A
      Explanation:
      • N/A
  6. Functions of binding site of active site of an enzyme is recognition of substrate, binding with substrate and formation of:
    1. Substrate
    2. ES complex
    3. Products
    4. All these
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  7. Which of the following is non protein in nature and can be used again and again?
    1. Enzyme
    2. Coenzyme
    3. Cofactor
    4. Polypeptide part
    5. Show Answer
      Answer: B
      Explanation:
      • N/A
  8. When non-protein part is loosely attached and is inorganic in nature, it’s called:
    1. Activator
    2. Coenzyme
    3. Prosthetic group
    4. Cofactor
    5. Show Answer
      Answer: A
      Explanation:
      • N/A
  9. Most of the coenzymes are derived from:
    1. Minerals
    2. Aminoa acids
    3. Proteins
    4. Vitamins
    5. Show Answer
      Answer: D
      Explanation:
      • N/A
  10. When protein part of enzyme is detached from its cofactor it is inactive and is called:
    1. Holoenzyme
    2. Apoenzyme
    3. Zymogen
    4. Proenzyme
    5. Show Answer
      Answer: B
      Explanation:
      • N/A

COMING SOON

  1. FINE ARTS
  2. HOME ECONOMICS
  3. JOURNALISM
  4. PHILOSOPHY
  5. SARAIKI(سرائیکی)
  6. SOCIAL WORK