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For DNA polymerase to link nucleotide together as new strands of DNA the first nucleotide must be attached to a because DNA polymerase can only add nucleotides to a pre-existing strand?
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∙ 13y ago
RNA Primer
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∙ 13y ago
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DNA is built of billions of subunits called?
Nucleic acids consist of either one or two long chains of repeating units called nucleotides, which consist of a nitrogen base (a purine or pyrimidine) attached to a sugar phosphate.
What is the name of the specific molecule to which the nucleotide is attached?
They are attached to a deoxyribose sugar.
Differences between DNA polymerase and RNA polymerase?
A polymerase is an enzyme that catalyzes the conversion of free nucleotides into a single strand. DNA polymerase differs from RNA polymerase in two major respects: * Like all enzymes, DNA polymerase is substrate-specific. DNA polymerase cannot extend a single strand of DNA; it needs at least a short segment of double-stranded DNA at the outset. * As its name implies, DNA polymerase incorporates deoxyribonucleotides into the new strand. RNA polymerase incorporates ribonucleotides. These differences mean that DNA polymerase is active when new DNA strands are formed, as in DNA replication, and RNA polymerase is active when new RNA is formed, as in transcription. Before DNA replication can begin, the two strands must uncoil, so that each can form a template for free nucleotides to attach to. But DNA polymerase cannot get started with a single strand! In vivo(in the cell) RNA polymerase, which is active in the presence of single-stranded DNA, catalyzes the incorporation of a handful of nucleotides into a new strand. The short length of double-stranded nucleic acid that is produced enables DNA polymerase to swing into action. This still leaves a potential difficulty: the nucleotides incorporated in the presence of RNA polymerase are the wrong sort (ribonucleotides). They are subsequently replaced by DNA polymerase. In vitro (during PCR, the polymerase chain reaction) a primer, specially synthesized in a laboratory, attaches to a specific segment of single-stranded DNA, and the DNA polymerase takes over from there. The primer consists of a short length of single-stranded DNA that uniquely complements a specific DNA segment that is targeted for amplification, for example for forensic analysis.In practice, there are several different DNA polymerases and RNA polymerases in an organism.
Is thymine found in dna nucleotides?
Thymine is one of the four possible bases which, when attached to a phosphate group and a molecule of deoxyribose, forms a nucleotide; nucleotides are the monomer units of DNA.
What does it mean to say DNA polymerase reads a template strand to make the complementary strand?
During DNA replication, the enzyme DNA polymerase catalyses the formation of new strands of DNA, using the old strands as models. DNA has a double-helix structure, with two strands forming each helix. Each strand is made up of DNA nucleotides, with the genetic information encoded in the sequence of different nucleotides (different nucleotides are distinguished by molecules called 'bases' attached to them, so the sequence of nucleotides is known as the 'base sequence'). The base sequence of one strand is complementary to that of its' neighbour - the base A binds with T, and C with G, so if one strand had the sequence ATTACA, the base sequence of the complementary strand would be TAATGT. When DNA polymerase creates a new DNA strand, it does so by matching nucleotides to the base sequence of one of the strands - the template strand. New nucleotides are brought in, which match the template in a complementary fashion (ie. A-T, C-G), and join to become one new strand. This new strand is complementary to the template.
For DNA polymerase to link nucleotides together as new strands of DNA the first nucleotide must be attached to what because DNA polymerase can only add nucleotides to a pre exsisting strand?
RNA Primer
What enzyme assembles the complimentary nucleotide bases during replication?
THat would be the enzyme DNA Polymerase III which attaches free floating nucleotides to the parent strand. But remember, they can only be attached to a free 3' position!
What are nucleotides attached to?
Nucleotides are attached to each other through a sugar-phosphate backbone. The phosphate group of one nucleotide is attached to the sugar molecule of another nucleotide, forming a chain. Additionally, nucleotides are also attached to nitrogenous bases, such as adenine, cytosine, guanine, or thymine (in case of DNA) or uracil (in case of RNA).
What are the name of the four nucleotides?
cytosine, thymine, adenine, and guanine..
What type of bond joins two nucleotides together to form a nucleic acid?
The connection between nucleotides is between the sugar of the first nucleotide and the phosphate of the second. These are covalent bonds yielding a covalently attached sugar-phosphate backbone.
what are the monomers of DNA?
The monomers of DNA are called nucleotides, and the polymer is a polynucleotide.There are four different nucleotides in DNA called A, T, G, and C for the nitrogenous base sidegroup (adenine, thymine, guanine, and cytosine respectively) attached to the sugar-phosphate backbone (deoxyribose-phosphate) of a nucleotide. These nucleotides can be joined in any order, permitting the "spelling" of an unlimited number of different genetic "words".
What is the name of the molecule to which nucleotide is attached?
They are attached to a deoxyribose sugar.
DNA is built of billions of subunits called?
Nucleic acids consist of either one or two long chains of repeating units called nucleotides, which consist of a nitrogen base (a purine or pyrimidine) attached to a sugar phosphate.
Can scientist make DNA?
Yes, we can!We have been successful in making sequences like primers (up to 60 nucleotides long)The process involves starting with a first nucleotide attached to a bead and throwing in the next nucleotide in ample quantity, hoping some will bind.... followed by washing, and then again next nucleotideMost of this is robotic, but possible!It takes a few cents per nucleotide :)
What is the polymer of dna known as?
The monomer units of DNA are nucleotides, and the polymer is known as a "polynucleotide." Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.
What is the name of the specific molecule to which nucleotide is attached?
They are attached to a deoxyribose sugar.
What is the name of the specific molecule to which the nucleotide is attached?
They are attached to a deoxyribose sugar.
