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DR. YSR UNIVERSITY OF HEALTH SCIENCES:AP:VIJAYAWADA-520 008
MBBS DEGREE EXAMINATION – APRIL, 2023
FIRST M.B.B.S. EXAMINATION
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BIOCHEMISTRY – PAPER-II (Set C)
(Multiple Choice Questions)
Time: 20 Minutes Max Marks: 20
Note: Answer all questions 1x20=20
SECTION – I (MCQs- 20 MARKS)
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- The amino acid found in protein structure
- Arginine
- Proline
- Histidine
- Lysine
- Non protein amino acid is
- Ornithine
- Homocysteine
- Histamine
- All of them
- The following nitrogenous base not present in DNA structure
- Adenine
- Guanine
- Cytosine
- Uracil
- The bonds in protein structure that are not broken on denaturation
- Hydrogen bonds
- Peptide bonds
- Ionic bonds
- Disulfide bonds
- Which is a sulfur containing essential amino acid
- Methionine
- Cysteine
- Cystine
- All of them
- The following coenzyme is a nucleotide
- FAD
- NAD+
- COASH
- All of them
- Iron in the mucosal cells binds with the protein
- Transferrin
- Ferritin
- Ceruloplasmin
- Hemosiderin
- Hemophilia A is due to the deficiency of clotting factor
- X
- V
- VIII
- II
- The only route through which H+ ions are eliminated from the body
- Lungs
- Stomach
- Kidneys
- None of them
- Element that prevents the development of dental caries
- Fluorine
- Calcium
- Phosphorus
- Sodium
- The anion with highest concentration in the extracellular fluids is
- Cl-
- HCO3-
- HPO4-
- Protein
- Fight, fright and flight hormone is
- Thyroxine
- Aldosterone
- Epinephrine
- ADH
- Mitochondrial DNA is inherited from
- Mother only
- Father only
- Both of them
- Either mother or father
- The anion gap refers to the unmeasured plasma anion concentration (in the laboratory) and is represented by
- Proteins and organic acids
- Phosphate and sulfate
- Urate
- All of them
- Methylation of DNA results in
- Recruiting proteins involved proteins involved in gene repression
- Inactivation of genes
- No effect on genes
- Inactivation of protein motifs
- Enzyme that removes RNA primer during DNA replication is
- Primase
- DNA polymerase I
- DNA polymerase II
- Ligase
- As per WHO criteria, a person is said to be diabetic in oral glucose tolerance test (GTT)
- Fasting blood glucose exceeds 126 mg/dl, and 2 hours after OGTT goes beyond 200 mg/dl
- Fasting blood glucose exceeds 86 mg/dl, and 2 hours after OGTT goes beyond 100 mg/dl
- Fasting blood glucose exceeds 76 mg/dl, and 2 hours after OGTT goes beyond 92 mg/dl
- None of the above
- Carcinoembryonic antigen produced by the embryonic tissue of
- Liver
- Gut
- Pancreas
- All of the above
- Tetany is associated with the following condition
- Hypocalcemia
- Hypercalcemia
- Hyperparathyroidism
- Renal rickets
- HbA1c reflects the mean blood glucose level over months period prior to its measurement
- 2
- 3
- 4
- 6
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