(A) Thiamin
(B) Cobalamin
(C) Pyridoxine
(D) Folic acid
Tag: Mcqs of Biochemistry
Subacute combined degeneration of cord is caused due to deficiency of?
(A) Niacin
(B) Cobalamin
(C) Biotin
(D) Thiamin
Vitamin B12 deficiency can be diagnosed by urinary excretion of?
(A) Pyruvate
(B) Methylmalonate
(C) Malate
(D) Lactate
A deficiency of vitamin B12 causes?
(A) Beri-Beri
(B) Scurvy
(C) Perniciuos anemia
(D) Ricket
Emperical formula of cobalamin is?
(A) C63H88N12O14P.CO
(B) C61H82N12O12P.CO
(C) C61H88N12O14P.CO
(D) C63H88N14O14P.CO
Vitamin B12 has a complex ring structure (corrin ring) consisting of four?
(A) Purine rings
(B) Pyrimidine rings
(C) Pyrrole rings
(D) Pteridine rings
The central heavy metal cobalt of vitamin B12 is coordinately bound to?
(A) Cyanide group
(B) Amino group
(C) Carboxyl group
(D) Sulphide group
The central structure of B12 referred to as corrin ring system consists of?
(A) Cobalt
(B) Manganese
(C) Magnesium
(D) Iron