MCQ Book Questions

Q51860. For unwinding of double helical DNA,

Q51861. Helicase and DNAB protein cause

Q51862. The unwound strands of DNA are held apart by

Q51863. Deoxyribonucleotides are added to RNA primer by

Q51864. Ribonucleotides of RNA primer are re- placed by deoxyribonucleotides by the enzyme:

Q51865. DNA fragments are sealed by

Q51866. Negative supercoils are introduced in DNA by

Q51867. Reverse transcriptase activity is present in the eukaryotic:

Q51868. DNA polymerase III holoenzyme possesses

Q51869. DNA polymerase I possesses

Q51870. 3’→5’ Exonuclease activity of DNA polymerase I

Q51871. All of the following statements about RNA-dependent DNA polymerase are true except:

Q51872. Reverse transcriptase catalyses

Q51873. DNA A protein can bind only to

Q51874. DNA topoisomerase I of E. coli catalyses

Q51875. In mammalian cell cycle, synthesis of DNA occurs during

Q51876. Melting temperature of DNA is the tempera- ture at which

Q51877. Melting temperature of DNA is increased by its

Q51878. Buoynat density of DNA is increased by its

Q51879. Relative proportions of G and C versus A and T in DNA can be determined by its