DNA strands may act as templates only during specialphase of cell cycle called S-phase, so cell should be in that phase of growth. To perform replication itself, a huge number...
1 Answers 1 viewsThe initiation of the replication process is done by the primase. The primase synthesizes RNA primer for DNA polymerase III, so it can begin the replication process. The right answer...
1 Answers 1 views3. RNA polymerase.RNA polymerase is an enzyme that synthesises RNA using DNA as a template. As a result, the transcription (synthesis of RNA) cannot begin without RNA polymerase.
1 Answers 1 viewsThe function of the primase enzyme is to synthesize short RNA primers that are required to initiate synthesis of new DNA strands by the enzyme DNA polymerase. Synthesis of primer...
1 Answers 1 viewsMultiple enzymes and proteins are required for DNA replication at a replication fork.• These include DNA polymerases, single-strand DNA binding proteins, helicases, primase,topoisomerases, and DNA ligase. Some of these are...
1 Answers 1 viewsAll these polymerases add new bases to the 3' end of existing strands. That is, they synthesize in a 5'-to-3' direction by extending a strand base-paired to the template
1 Answers 1 viewsE. coli, as most microscopic organisms (bacteria), has a single origin of replication on its chromosome. As the DNA opens, two Y-molded designs called replication forks are framed, together making...
1 Answers 1 viewsSince DNA polymerase requires a free 3' OH group for initiation of synthesis, it can synthesize in only one direction by extending the 3' end of the preexisting nucleotide chain....
1 Answers 1 views1. The bacterial chromosome has commonly one origin of replication. However, the replication occurs in both directions from the origin. As a result, there are two forks of replication in...
1 Answers 1 views1. DNA ligase is an enzyme that catalyzes the formation of a phosphodiester bond between two DNA strands joining them together. DNA ligase is present in eukaryotes and prokaryotes and...
1 Answers 1 views