(A) Ethereal sulphate
(B) Inorganic sulphate
(C) Sulphites
(D) Thioorganic compound
Category: Biochemistry Mcqs
Biochemistry Mcqs for NTS, PPSC, FPSC, SPSC, KPPSC, AJKPSC, PMS, NAT, PTS, Educators, Lecturer and all other exams. Here users will find all the Mcqs related to Biochemistry.
The enzyme dopamine β-oxidase which catalyses conversion of dopamine to norepinephrine requires?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin E
(D) Vitamin B12
The rate limiting step in the biosynthesis of catecholamines is?
(A) Decarboxylation of dihydroxyphenylalanine
(B) Hydroxylation of phenylalanine
(C) Hydroxylation of tyrosine
(D) Oxidation of dopamine
Conversion of tyrosine to dihydroxyphenylalanine is catalysed by tyrosine hydroxylase which requires?
(A) NAD
(B) FAD
(C) ATP
(D) Tetrahydrobiopterin
Tryptophan could be considered as precursor of?
(A) Melanotonin
(B) Thyroid hormones
(C) Melanin
(D) Epinephrine
In carcinoid syndrome the argentaffin tissue of the abdominal cavity overproduce?
(A) Serotonin
(B) Histamine
(C) Tryptamine
(D) Tyrosine
The 2 nitrogen atoms in urea are contributed by?
(A) Ammonia and glutamate
(B) Glutamine and glutamate
(C) Ammonia and aspartate
(D) Ammonia and alanine
A compound serving a link between citric acid cycle and urea cycle is?
(A) Malate
(B) Citrate
(C) Succinate
(D) Fumarate