MCQ on DNA REPLICATION PART I

MCQ on DNA REPLICATION PART- I One of the functions of DNA is toA. secrete vacuoles.B. make copies of itself.C. join amino acids to each other.D. carry genetic information out of the nucleus DNA replication involves the breaking of bonds betweenA. bases. B. sugars and bases.C. phosphates and bases.D. sugars and phosphates Which of the following statements best describes DNA replication?A . tRNA, by complementary base pairing with mRNA, produces proteins.B. RNA nucleotides, by complementary base pairing with DNA, produce DNA.C. DNA nucleotides, by complementary base pairing with DNA,produce DNA.D. RNA nucleotides, by complementary base pairing with DNA, produce tRNA. In the Meselson-Stahl DNA replication experiment, what percent of the DNA was composed of one light strand and one heavy strand after one generation of growth in 14N containing growth media? A 0 B 25 C 50 D 75 The replicative polymerase in E.col i isA DNA polymerase IB DNA polymerase IIC DNA polymerase IIID DNA primase The enzyme responsible for unwinding DNA double helix during replication is DNA Polymerase RNA Polymerase Helicase Ligase In the Maselson-Stahl experiment ,which mode of replication can be eliminated based on data derived after one generation of replication Dispersive Semi-conservative Conservative All the three modes All of the following are differences between eukaryotic and prokaryotic DNA replication except The type and number of Polymerases involved in DNA synthesis Multiple Vs single replication origins The rate of DNA synthesis The ability to form replication fork For the DNA strand 5'-TACGATCATAT-3' the correct complementary DNA strand is: 3’- GCTCATCATAT-5’ 3’-ATGCTAGTATA-5’ 5’- ATGCTAGTATA-3’ 3’ AUGCTUGTUTU-5’ Exact replication of DNA is possible due to The genetic code Mitosis The base pairing rules DNA molecules are enclosed within nuclear membrane The basic monomers used in DNA replication are Glucose Deoxyribonucleotides Ribonucleotides Amino acids Which enzyme catalyzes the synthesis of a new strand for a DNA molecule by linking nucleotides to the developing strand ? DNA ligase DNA polymerase Single stranded DNA binding proteins Topoisomerase