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MCQs

Total Questions : 118 | Page 4 of 12 pages
Question 31. Multiple forms of the same enzyme is referred to as __________
  1.    allosteric enzyme
  2.    biosensor
  3.    isoenzyme
  4.    effectors
 Discuss Question
Answer: Option C. -> isoenzyme
Answer: (c).isoenzyme
Question 32. Which of the following property is not shown by isoenzyme?
  1.    Sigmoidal shaped curve
  2.    Electrophoretic mobility
  3.    Kinetic properties
  4.    Aminoacid composition
 Discuss Question
Answer: Option A. -> Sigmoidal shaped curve
Answer: (a).Sigmoidal shaped curve
Question 33. Which of the following is not true for isoenzymes?
  1.    Many enzymes occur in several molecular forms called isoenzymes
  2.    Different isoenzyme catalyze same chemical reaction, but differ in their primary structure and kinetic properties
  3.    Isoenzymes are coded by different gene
  4.    Enzymes having other site
 Discuss Question
Answer: Option D. -> Enzymes having other site
Answer: (d).Enzymes having other site
Question 34. Which of the following is not true for isoenzymes?
  1.    Regulation specific to distinct tissue and development stages
  2.    Distinctive properties and patterns of metabolism to particular organ
  3.    Regulatory metabolites are called effector or modulator or modifier
  4.    Fine tuning of metabolism
 Discuss Question
Answer: Option C. -> Regulatory metabolites are called effector or modulator or modifier
Answer: (c).Regulatory metabolites are called effector or modulator or modifier
Question 35. Which of the following is false for lactate dehydrogenase (LDH)?
  1.    It is a tetrameric enzyme
  2.    It catalyzes reversible phosphorylation of creatinine to creatinine phosphate by ATP
  3.    It has five isoenzymes
  4.    It is made up of two polypeptides
 Discuss Question
Answer: Option B. -> It catalyzes reversible phosphorylation of creatinine to creatinine phosphate by ATP
Answer: (b).It catalyzes reversible phosphorylation of creatinine to creatinine phosphate by ATP
Question 36. An increase in serum level of LDH₁ relative to LDH₂ is an indication of ___________
  1.    muscular dystrophy
  2.    leukemia
  3.    myocardial infarction
  4.    hepatitis with jaundice
 Discuss Question
Answer: Option C. -> myocardial infarction
Answer: (c).myocardial infarction
Question 37. Which of the following is not associated with increase of LDH activity in urine?
  1.    Megaloblastic anemia
  2.    Chronic glomerulonephritis
  3.    Diabetic nephrosclerosis
  4.    Kidney malignancies
 Discuss Question
Answer: Option A. -> Megaloblastic anemia
Answer: (a).Megaloblastic anemia
Question 38. LDH₄ and LDH₅: Bacterial meningitis:: LDH₁ and LDH₃: ___________
  1.    Kidney malignancies
  2.    Myocardial infarction
  3.    Intracranial hemorrhage
  4.    Viral meningitis
 Discuss Question
Answer: Option D. -> Viral meningitis
Answer: (d).Viral meningitis
Question 39. Which of the following is not an isoenzyme of acid phosphatase?
  1.    Prostate
  2.    Liver
  3.    Salivary
  4.    Spleen
 Discuss Question
Answer: Option C. -> Salivary
Answer: (c).Salivary
Question 40. Which of the following is not isoenzyme form of alkaline phosphatase?
  1.    Bone
  2.    Muscle
  3.    Placenta
  4.    Intestine
 Discuss Question
Answer: Option B. -> Muscle
Answer: (b).Muscle

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