During which of the following process a new copy of a DNA molecule is precisely synthesized? Transcription Trasformation Replication Translation TRUE ANSWER : ? YOUR ANSWER : ?
The replication of chromosomes by eukaryotes occurs in a relatively short period of time because eukaryotic DNA is always single stranded each chromosome contains multiple replicons the eukaryotic replication machinery is 1000 times faster than the prokaryotes the eukaryotes have more amount of DNA for replication TRUE ANSWER : ? YOUR ANSWER : ?
The synthesis of DNA by DNA polymerase occurs in the 3' to 3' direction 3' to 5' direction 5' to 3' direction 5' to 5' direction TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following enzymes unwind short stretches of DNA helix immediately ahead of a replication fork? DNA polymerases Single-stranded binding proteins Helicases Topoisomerases TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements on replication in E.coli is correct? Occurs only when λ phase has infected E. coli It occurs in a unidirectional manner It occurs in bidirectional manner Always uses T7 DNA polymerase when infected by T7 phage TRUE ANSWER : ? YOUR ANSWER : ?
DNA replication rates in prokaryotes are approximately of the order of 1,00 bases per second 10,000 bases per second 1,000 bases per second 10 bases per second TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following possesses both 5'-3' and 3'-5' exonuclease activity? Taq DNA polymerase Kornberg enzyme None of these DNA polymerase III TRUE ANSWER : ? YOUR ANSWER : ?
Both strands of DNA serve as templates concurrently in replication excision repair mismatch repair none of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following repairs nicked DNA by forming a phosphodiester bond between adjacent nucleotides? Topoisomerases DNA gyrase Helicase DNA ligase TRUE ANSWER : ? YOUR ANSWER : ?
During DNA replication in prokaryotes, synthesis begins on the circular chromosome at any stretch of DNA that is high in AT pairs randomly on the chromosome at the promoter always at the same place TRUE ANSWER : ? YOUR ANSWER : ?