(A) Gel filtration chromotography
(B) Ion exchange chromatography
(C) Electrophoresis
(D) Affinity chromatography
Tag: Mcqs of Biochemistry
In a protein molecule the disulphide bond is not broken by?
(A) Reduction
(B) Oxidation
(C) Denaturation
(D) X-ray diffraction
Tertiary structure of a protein describes?
(A) The order of amino acids
(B) Location of disulphide bonds
(C) Loop regions of proteins
(D) The ways of protein folding
The primary structure of fibroin, the principal protein of silk worm fibres consists almost entirely of?
(A) Glycine
(B) Aspartate
(C) Keratin
(D) Tryptophan
Both α-helix and β-pleated sheet conformation of proteins were proposed by?
(A) Watson and Crick
(B) Pauling and Corey
(C) Waugh and King
(D) Y.S.Rao
At the lowest energy level α-helix of polypeptide chain is stabilised?
(A) By hydrogen bonds formed between the H of
peptide N and the carbonyl O of the residue
(B) Disulphide bonds
(C) Non polar bonds
(D) Ester bonds
The a-helix of proteins is?
(A) A pleated structure
(B) Made periodic by disulphide bridges
(C) A non-periodic structure
(D) Stabilised by hydrogen bonds between NH
and CO groups of the main chain
In proteins the α-helix and β-pleated sheet are examples of?
(A) Primary structure
(B) Secondary structure
(C) Tertiary structure
(D) Quaternary structure