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Biochemistry _Biological amines/Tyrosine

Quiz by suraj kapoor

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8 questions
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  • Q1

    Mark the incorrect statement

    All are correct

    Phenylalanine is converted to tyrosine by hydroxylation reaction

    Confirmatory test for phenylketonuria is FeCl3 test

    Phenylalanine is a tyrosine amino acid 

    30s
  • Q2

    Tyrosine synthesizes all except

    All are synthesized 

    Catecholamine

    Thyroid harmone

    Melanin

    30s
  • Q3

    Mark the incorrect statement

    Epinephrine is formed from nor-epinephrine by methylation

    Nor- epinephrine is increased in neuroblastoma

    Deficiency of N methyl transferase causes Albinism

    All are correct

    30s
  • Q4

    Enzyme involved in synthesis of VMA

    DOPA decarboxylase

    None of the above

    MAO

    COMT

    30s
  • Q5

    Neonatal tyrosinemia occurs due to deficiency of

    Homogenistic acid oxidase

    None of the above

    Tyrosine transaminase

    Phenyl Pyruvic acid hydroxylase

    30s
  • Q6

    Dopamine is produced from tyrosine by

    Hydroxylation

    Deamination

    Methylation

    Decarboxylation

    30s
  • Q7

    Biological amine which is an inhibitory neurotransmitter

    Glutamate

    Tyrosine

    Serine

    Histidine

    30s
  • Q8

    Circardian rhythm  , cerebral activity is related to

    Serine

    Tryptophan

    Histidine

    Tyrosine

    30s

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