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Biochemistry Mcqs

Which of the following amino acids is quickly converted to tyrosine ?

  • (A)  Arginine
  • (B)  Glycine
  • (C)  Phenylalanine
  • (D)  Leucine
Submitted By :Ali Uppal


ALbumin is synthesized by_____________?

  • (A)  Liver
  • (B)  Kidney
  • (C)  Muscle
  • (D)  Spleen
Submitted By :Ali Uppal


Histidine is converted to histamine by_____________?

  • (A)  Transamination
  • (B)  Hydroxylation
  • (C)  Decarboxylation
  • (D)  Reduction
Submitted By :Ali Uppal


A mutation that converts an amino acid codon to a stop codon is a_____________?

  • (A)  Nonsense mutation
  • (B)  Transversion
  • (C)  Silent mutation
  • (D)  Frame shift mutation
Submitted By :Ali Uppal


Decarboxylation of which of the following amino acids results in formation of a vasodilator ?

  • (A)  Valine
  • (B)  Arginine
  • (C)  Histidine
  • (D)  Glutamic acid
Submitted By :Ali Uppal


Submitted By :Ali Uppal


Ammonia is detoxified in liver to form____________?

  • (A)  Uric acid
  • (B)  Glutamine
  • (C)  Creatinine
  • (D)  Urea
Submitted By :Ali Uppal


Key enzyme in urea synthesis is____________?

  • (A)  Urease
  • (B)  Carbamyl synthetase
  • (C)  Arginase
  • (D)  Ornithine
Submitted By :Ali Uppal


Quaternary structure of protein is_____________?

  • (A)  The arrangement sequence of amino acids in the polypeptide chain
  • (B)  Inter relation between amino acids in a single polypeptide chain
  • (C)  Inter relation of amino acids in 2 polypeptide chains
  • (D)  The inter relation and arrangement of polypeptides in a protein with more than 2 polypeptide chains
Submitted By :Ali Uppal


Glycine is present in____________?

  • (A)  Hemoglobin
  • (B)  Glutathione
  • (C)  Purines
  • (D)  Creatine
  • (E)  All of the above
Submitted By :Ali Uppal