NTRUHS MBBS Biochemistry January / February 2022 (SET-A CBME)

Dr. NTR University of Health Sciences · Biochemistry · 2022 · January/February · CBME

Questions (20)

1.During urea cycle two nitrogen atoms are derived from a) Ammonia and arginine b) Ammonia and aspartic acid c) Both from Ammonia d) Ammonia and Ornithine
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2.Ammonia is trapped in brain by a) Glutamine Synthetase reaction b) Glutaminase reaction c) Urea Synthesis cycle d) Glutamate dehydrogenase reaction
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3.The Major Donor of Carbon Atoms to the One-Carbon Pool is a) Serine b) Tyrosine c) Threonine d) Proline
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4.Which amino acid will give rise to major pigment of the body? a) Histidine b) Glutamic acid c) Ornithine d) Tyrosine
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5.Homogentisic acid is excreted in urine in a) Phenylketonuria b) Maple syrup urine disease c) Tyrosinosis d) Alkaptonuria
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6.Ochronosis is seen in a) Phenyl Ketonuria b) Alkaptonuria c) Tyrosinosis d) Albinism
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7.The anti-coagulant found in the body a) Potassium oxalate b) Sodium Citrate c) Heparin d) EDTA
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8.Hemopexin carries a) Free hemoglobin b) Free heme c) Free bilirubin d) Free iron
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9.Administration of diuretics cause loss of potassium which may lead to a) Metabolic acidosis b) Respiratory acidosis c) Respiratory alkalosis d) Metabolic alkalosis
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10.Which of the following conditions will produce high anion gap acidosis? a) Diarrhea b) Renal tubular acidosis c) Renal failure d) Uretero sigmoidostomy
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11.ECF volume does not change with a) ADH b) Aldosterone c) Calcitriol d) Renin
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12.The cation with lowest intra cellular concentration a) Potassium b) Magnesium c) Sodium d) Calcium
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13.Which contains iron a) Ceruloplasmin b) Xanthine oxidase c) Albumin d) Superoxide desmutase
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14.Which enzyme do not contain copper? a) Cytochrome Oxidase b) Superoxide dismutase c) Xanthine oxidase d) Tyrosinase
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15.The micro mineral present in teeth is a) Calcium b) lodine c) Fluorine d) Manganese
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16.Which of the following trace element has antioxidant role? a) Chromium b) Zinc c) Selenium d) Nickel
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17.Sigma factor is a) A sub unit of DNA polymerase b) A sub unit of RNA polymerase c) Asub unit of 50S ribosome d) responsible for initiation of replication
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18.Intron is portion of a) DNA that is cleaved of during replication b) mRNA that is removed after transcription c) tRNA that is added on after its synthesis d) Protein removed after translation
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19.Which hormone does not act at the level of transcription a) Cortisol b) Calcitriol c) Aldosterone d) Calcitonin
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20.M band in serum protein electrophoresis is seen in which condition? a) Cirrhosis b) Chronic infections c) Multiple myeloma d) Heavy chain disease
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