Biochemistry MCQs

Page No. 14

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


aArginine


bGlycine


cPhenylalanine


dLeucine


View Answer Phenylalanine

ALbumin is synthesized by_____________?


aLiver


bKidney


cMuscle


dSpleen


View Answer Liver

Histidine is converted to histamine by_____________?


aTransamination


bHydroxylation


cDecarboxylation


dReduction


View Answer Decarboxylation

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


aNonsense mutation


bTransversion


cSilent mutation


dFrame shift mutation


View Answer Nonsense mutation

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


aValine


bArginine


cHistidine


dGlutamic acid


View Answer Histidine

A small Ca+2 binding protein that modifies the activity of many enzymes and other proteins in response to changes of Ca+2 concentration is known as______________?


aCycline


bCalmodulin


cCollagen


dKinesin


View Answer Calmodulin

Ammonia is detoxified in liver to form____________?


aUric acid


bGlutamine


cCreatinine


dUrea


View Answer Urea

Key enzyme in urea synthesis is____________?


a Urease


bCarbamyl synthetase


cArginase


dOrnithine


View Answer Carbamyl synthetase

Major source of ammonia in the kidney is___________?


aUrea Aspartate


bAspartate


cGlutamine


dGlutamate


View Answer Glutamate

Creatine is formed metabolically from______________?


aTryptophan


bArginine


cPhenylalanine


dHistidine


View Answer Arginine

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