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PROTEINS AND PROTEIN METABOLISM- Part 22
See all quizzes of PROTEINS AND PROTEIN METABOLISM- Part 22 here:
1 The bond in proteins that is not broken
under usual conditions of denaturation:
(A) Hydrophobic bond (B) Hydrogen bond
(C) Disulphide bond (D) Peptide bonds
2. Plasma proteins act as
(A) Buffers (B) Immunoglobulins
(C) Reserve proteins (D) All of these
3. Group that reacts in the Biuret test:
(A) Peptide (B) Amino group
(C) Carboxylic group (D) Aldehyde group
4. In nitroprusside test, amino acid cysteine
produces a:
(A) Red colour (B) Blue colour
(C) Yellow colour (D) Purple colour
5. Protein present in hemoglobin has the
structure known as
(A) Primary (B) Secondary
(C) Tertiary (D) Quarternary
6. Isoelectric pH of an amino acid is that pH
at which it has a
(A) Positive charge (B) Negative charge
(C) Nil net charge (D) None of these
7. Albuminoids are similar to
(A) Albumin (B) Globulin
(C) Both (A) and (B) (D) None of these
8. Optical isomers of all aminoacids exist
except
(A) Glycine (B) Arginine
(C) Alanine (D) Hydroxy proline
9. Proteins that constitute keratin, collagen
and elastin in body are
(A) Protamines (B) Phosphol proteins
(C) Scleroproteins (D) Metaproteins
10. Systematic name of lysine is
(A) Amino acetic acid
(B) 2,6 diaminohexanoic acid
(C) Aminosuccinic acid
(D) 2-Aminopropanoic acid
11. Side chains of all following amino acids
contain aromatic rings except
(A) Phenyl alanine (B) Alanine
(C) Tyrosine (D) Tryptophan
12. Abnormal chain of amino acids in sickle
cell anaemia is
(A) Alpha chain (B) Beta chain
(C) Delta chain (D) Gama chain
13. Number of chains in globin part of normal
Hb:
(A) 1 (B) 2
(C) 3 (D) 4
14. The PH of albumin is
(A) 3.6 (B) 4.7
(C) 5.0 (D) 6.1
15. Ninhydrin reaction gives a purple colour
and evolves CO2 with
(A) Peptide bonds (B) Histamine
(C) Ergothioneine (D) Aspargine
16. Denaturation of proteins involves
breakdown of
(A) Secondary structure(B) Tertiary structure
(C) Quarternary structure(D) All of these
17. In denaturation of proteins, the bond
which is not broken:
(A) Disulphide bond (B) Peptide bond
(C) Hydrogen bond (D) Ionic bond
18. The purity of an isolated protein can be
tested by employing various methods.
(A) Solubility curve
(B) Molecular weight
(C) Ultra Centrifugation
(D) Immuno Ractivity
(E) All of these
19. More than one break in the line or in saturation
curve indicates the following
quality of protein.
(A) Non homogenity (B) Purity
(C) Homogeneity (D) None of these
20. A sharp moving boundary is obtained
between the pure solvent and solute
containing layer in
(A) Chromatography
(B) Immuno Reactivity
(C) Ultra Centrifugation
(D) Solubility curve
21. The antibodies raised against a pure
protein will show only one sharp spike on
this technique:
(A) Solubility curve
(B) Solvent precipitation
(C) Molecular weight determination
(D) Immuno electrophoresis
22. This technique takes the advantage of the
fact that each protein has different pH at
which it is electrically neutral i.e., its
isoelectric pH:
(A) Isoelectric focussing
(B) Immunoel Ectro Phoresis
(C) Chromatography
(D) HPLC
23. The following technique makes use of the
difference in net charges of proteins at a
given pH:
(A) Thin layer chromatography
(B) Ion exchange chromatography
(C) High performance liquid chromatography
(D) Paper chromatography
24. The ratio of the distance moved by a
compound to the distance moved by the
solvent frent is known as its
(A) PI value (B) Linking number
(C) Rf value (D) Gold number
25. The movement of charged particles
towards one of the electrodes under the
influence of electrical current is
(A) Gel filtration
(B) Molecular sieving
(C) Gas liquid chromatography
(D) Electrophoresis
26. An anion exchange resin linked to
cellulose backbone is
(A) DEAE cellulose (B) CM cellulose
(C) Sephadex (D) None of these
27. A cation exchange resin linked to cellulose
backbone is
(A) CM-cellulose (B) DEAE cellulose
(C) Starch (D) Biogel
28. The sorting out of molecules according to
size and shape may be adapted to protein
purification in this technique:
(A) Adsorption chromatography
(B) Gel filtration chromatography
(C) Paper chromatography
(D) None of these
29. Frequently employed materials for the
adsorption chromatography of proteins
include
(A) High capacity supporting gel
(B) Starch blocks
(C) Calcium phosphate gel alumina gel and
hydroxy apatite
(D) All of these
30. The solubility of most proteins is lowered
at high salt concentrations is called as
(A) Salting in process (B) Salting out process
(C) Isoelectric focussing(D) None of these
31. Phenylalanine, ornithine and methionine
are involved in the biogenesis of
(A) Lysergic acid (B) Reserpine
(C) L-Hyoscyamine (D) Papaverine
32. All the following diuretics inhibit the
carbonic anhydrase except
(A) Acetazolamide (B) Bumetanide
(C) Furosemide (D) Ethacrynic acid
33. Protein is a polymer of
(A) Sugars (B) Phenols
(C) Amino acids (D) Carboxylic acids
