reverse transcriptase
Hydrolysis(break) of a phosphodiester bond, separates two strands of DNA Strand breakage by the DNA untwisting enzyme results in covalent attachment of the enzyme to DNA
RNA polymerase
The enzyme RNA polymerase transcribes DNA. This enzyme initiates transcription, joins the RNA nucleotides together, and terminates.
DNA replication produces a complimentary DNA strand. Transcription produces a complimentary mRNA strand. The major enzyme that carries out DNA replication is DNA Polymerase III (in prokaryotes). The major enzyme that carries out transcription is RNA Polymerase. DNA replication results in two copies of the DNA. Transciption does not affect the DNA - it simply re-anneals (re-joins) after the process. In DNA replication the complementary base to A is T. In transcription the complementary base to A is U.
DNA Helicase unwinds the DNA strand in the specific location for it to be transcribed.
DNA polymerase
DNA polymerase
DNA Polymerase
Hydrolysis(break) of a phosphodiester bond, separates two strands of DNA Strand breakage by the DNA untwisting enzyme results in covalent attachment of the enzyme to DNA
DNA polymerase is the enzyme that "unzips" the complementary DNA strands allowing mRNA to transcribe, or copy, a section of DNA.
General term.DNA polymerase.-----------------------
reverse transcriptase
RNA polymerase
The enzyme RNA polymerase transcribes DNA. This enzyme initiates transcription, joins the RNA nucleotides together, and terminates.
Complementary DNA (cDNA) is DNA that has been copied from an mRNA through a reverse transcriptase enzyme. cDNA contains a copy of the original DNA sequence that made the mRNA - but without the introns (as these are cut out to create mRNA).
RNA Polymerase.
DNA replication produces a complimentary DNA strand. Transcription produces a complimentary mRNA strand. The major enzyme that carries out DNA replication is DNA Polymerase III (in prokaryotes). The major enzyme that carries out transcription is RNA Polymerase. DNA replication results in two copies of the DNA. Transciption does not affect the DNA - it simply re-anneals (re-joins) after the process. In DNA replication the complementary base to A is T. In transcription the complementary base to A is U.