what is the difference between dna gyrase and topoisomerase?
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DNA gyrase and topoisomerase IV are the two type II topoisomerases present in bacteria. ... Gyrase is involved primarily in supporting nascent chain elongation during replication of the chromosome, whereas topoisomerase IV separates the topologically linked daughter chromosomes during the terminal stage of DNA replication.
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The deoxyribose sugar of DNA contains one less oxygen-containing hydroxyl group. DNA is a more stable nucleic acid. RNA, on the other hand, contains a ribose sugar and is more reactive than DNA. Therefore, DNA is a better genetic material than RNA.
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What are the major differences between helicases, topoisomerases, and ligases used in DNA replication? a) Helicases and topoisomerases unwind DNA, with helicases functioning to relieve supercoil stress ahead of the replication process; and ligases seal DNA that has been broken or synthesized as Okazaki fragments.
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Transcription and DNA replication both involve making copies of the DNA in a cell. Transcription copies the DNA into RNA, while replication makes another copy of DNA.
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['DNA contains the sugar deoxyribose, while RNA contains the sugar ribose. ... ', 'DNA is a double-stranded molecule, while RNA is a single-stranded molecule.', 'DNA is stable under alkaline conditions, while RNA is not stable.', 'DNA and RNA perform different functions in humans.']
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The DNA is a double-stranded molecule that has a long chain of nucleotides. The RNA is a single-stranded molecule which has a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
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Though the function of both polymerases is to synthesise nucleic acid, both are functionally different. The DNA polymerase has polymerization as well as proofreading activity while the RNA polymerase only has the polymerization activity. ... The end process of synthesis is also different in both.
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There are two primary differences between the two molecules in these terms: ... In terms of the nitrogen bases, which are interchangeable, the DNA molecules use cytosine, guanine, thymine, and adenine (CGTA), whereas RNA uses uracil instead of thymine (CGUA).
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Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
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The two enzymes synthesize the DNA in the 5'-3' direction. DNA polymerase III synthesizes DNA on leading strand in a continuous manner, while DNA polymerase I have 5'-3' exonuclease activity which helps it in DNA repair, in multiple primer removals on lagging strand.
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In DNA replication in bacteria, the enzyme DNA polymerase III (abbreviated DNA pol III) adds nucleotides to a template strand of DNA. But DNA pol III cannot start a new strand from scratch.
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The main difference between hexokinase and glucokinase is that the hexokinase is an enzyme present in all cells whereas the glucokinase is an enzyme only present in the liver. Furthermore, hexokinase has a high affinity towards glucose while glucokinase has a low affinity towards glucose.
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Both DNA and RNA are built with a sugar backbone, but whereas the sugar in DNA is called deoxyribose (left in image), the sugar in RNA is called simply ribose (right in image).
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So, the three main structural differences between RNA and DNA are as follows: RNA is single-stranded while DNA is double-stranded. RNA contains uracil while DNA contains thymine. RNA has the sugar ribose while DNA has the sugar deoxyribose.
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Differences. DNA replication occurs in preparation for cell division, while transcription happens in preparation for protein translation. DNA replication is important for properly regulating the growth and division of cells. ... Transcription only occurs when a gene is turned on.
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Which of these is a difference between a DNA and an RNA molecule? - DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids. - DNA contains uracil, whereas RNA contains thymine. - DNA is usually double-stranded, whereas RNA is usually single-stranded.
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Both synthesize in the 5' to 3' direction, anti-parallel to the template. DNA polymerase requires a primer, but RNA polymerase can start a nucleotide chain from scratch. DNA polymerase used thymine, whereas RNA uses uracil. ... The region of DNA to which RNA polymerase binds to begin transcription.