38. Prokaryotic DNA dependent RNA polymerase is inhibited by the antibiotic:

(A) Puromycin

(B) Rifamycin
(C) Terramycin

(D) Streptomycin

39. Modification of a primary mRNA transcript in human cell does not normally involve:(A) synthesis of a long poly( A )sequence at the 3' end.(B) conversion of normal bases to modified bases, such as inosine and pseudouridine.(C) intron removal.(D) splicing.

40. Which of the following molecular technique is used for studying transcription factor-DNA interaction? (A) Electrophoretic mobility shift assay (B) Immunoblotting (C) Fluorescence in situ hybridization (D) Southern blotting

41. Which one of the followings is the major storage form of fat in the body?(A) Triglycerides(B) Phospholipids(C) Ceramides(D) Starch

42. Which one of the followings is an essential fatty acid?(A) Palmitic acid(B) linoleic acid(C) Lauric acid(D) Stearic acid

43. How many Ca2+ ion binding sites could be found in calmodulin?(A) 1(B) 2(C) 3(D) 4

44. Which one of the followings could be synthesized by the skin after exposure to sunlight?(A) Vit D2(B) Vit D3(C) Vit C(D)1a, 25-dihydroxycholecalciferol

45. Which one of following ions could be transported by valinomycin?(A) Na+(B) K+(C) Ca++(D)Mg++

1. Which of the following is the correct order of chromatin folding?(A)30 nM fiber formation, nucleosome formation, radial loop formation(B)radial loop structure, 30 nM fiber formation, nucleosome formation(C)nucleosome formation, 30 nM fiber formation, radial loop structure(D)30 nM fiber formation, radial loop formation, nucleosome formation(E)nucleosome formation, radial loop formation, nucleosome formation

2. Which of the following descriptions of chromatin remodeling is NOT correct?(A)Remodeling requires ATP for energy(B)BRG1 associates with BAFS(C)BRG1 is an ATPase(D)SWI/SNF binds to DNA through SANT domain(E)All SWI/SNF, ISWI, NuRD and INO80 family proteins make the DNA moreaccessible

3. The binding of which of the following snRNPs to spliceosome requires ATP?(A)U1(B)U2(C)U4(D)U5(E)U6

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