(A) Trypsin
(B) Chymotrypsin
(C) Carboxypeptidase
(D) Aminopeptidase
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.
All the following statements about pepsin are correct except?
(A) It is smaller than pepsinogen
(B) It is formed by the action of HCl on its precursor
(C) Its optimum pH is 1.0–2.0
(D) It hydrolyses the C-terminal and N-terminal
peptide bonds of proteins
DOPA is an intermediate in the synthesis of?
(A) Thyroid hormones
(B) Catecholamines
(C) Melanin
(D) Catecholamines and melanin
Histamine is formed from histidine by?
(A) Deamination
(B) Dehydrogenation
(C) Decarboxylation
(D) Carboxylation
Glycine is not required for the formation of?
(A) Taurocholic acid
(B) Creatine
(C) Purines
(D) Pyrimidines
All the following statements about albinism are correct except?
(A) Tyrosine hydroxylase (tyrosinase) is absent or
deficient in melanocytes
(B) Skin is hypopigmented
(C) It results in mental retardation
(D) Eyes are hypopigmented
All the following statements about phenylketonuria are correct except?
(A) Phenylalanine cannot be converted into
tyrosine
(B) Urinary excretion of phenylpyruvate and
phenyllactate is increased
(C) It can be controlled by giving a lowphenylalanine
diet
(D) It leads to decreased synthesis of thyroid
hormones, catecholamines and melanin
The defective enzyme in histidinemia is?
(A) Histidine carboxylase
(B) Histidine decarboxylase
(C) Histidase
(D) Histidine oxidase