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What if a 100- bar pair DNA double helix contains 45 cytosine's?
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What is the double helix?
A double helix is often referred to as a "twisted ladder." It consists of two spirals bound together.
What is the structure and location of DNA in eukaryotes?
DNA organization of Eukaryotes has the nucleic acids A pair with T and C pair with T in a double helix formation. Proteins help keep this all together along with hydrogen bonds holding the subunits of DNA together while covalent (strong) bonds hold the two strands together to make the double helix.
Does RNA exist in double helix?
No RNA is a single-stranded chain of nucleotides. The double helix is formed by two nucleotide strands of DNA not RNA. RNA can form secondary structures, but not the double helix seen with DNA.
How does the shape or RNA differ from the shape of DNA?
DNA (deoxyribonucleic acid ) has double helix. a phosphate group, and 5 carbon sugar back bone. DNA also has 4 nucleotides that pair, Adenine to Thymine and Guanine to Cytosine. RNA (ribonucleic acid) is a single strand with 5-carbon sugar that has one more oxygen than DNA. The nucleotides in RNA pair Adenine To URACIL, Guanine to Cytosine, and Thymine to Adenine (These pairings happen when the RNA is copying the DNA).
Describe How Bases Pair Up In The DNA Molecule?
Instead of forming one chain like many proteins and polymers, DNA is in the form of paired chains or strands. It has the shape of a twisted ladder, known as the double helix.
Assume 100 bair pair DNA double helix contains 45 cytosines. how many adenines are ther?
55. 45 cytosines would mean there must also be 45 guanines. This leaves room for 55 base pairs of adenine and thymine.
Why are GC and AT the only base pairs permissible in the double helix?
If you are asking why G must pair with C and A must pair with T it is because of the their size differences. Two of them are pyrines and two are pyramidines, this means that 2 are larger and 2 are smaller. In order for the double helix to be consistent they must pair with each other in order to create the helix.
What is the double helix?
A double helix is often referred to as a "twisted ladder." It consists of two spirals bound together.
What does it mean when it is said that DNA is the template?
When DNA replicates, it is "unzipped", or split in half. Each half will be left with only one half of a base pair (A&T, C&G). To make new DNA, the single helix will act as a template to build the complementary single helix, which will in turn create a new double helix. Since each element of a base pair can only pair with its other half, the helix is a map, or template, for the new helix. The same concept applies when talking about transcription, or the formation of RNA. However, RNA replaces thymine (T) with uracil (U).
What is the structure and location of DNA in eukaryotes?
DNA organization of Eukaryotes has the nucleic acids A pair with T and C pair with T in a double helix formation. Proteins help keep this all together along with hydrogen bonds holding the subunits of DNA together while covalent (strong) bonds hold the two strands together to make the double helix.
What holds one strand against the other in the double helix?
Hydrogen bonds between nitrogen and hydrogen accross the covalent bonds involving a free pair of electrons
How many bases are found in one turn of the DNA double helix model?
In molecular biology, the term double helix[1] refers to the structure formed by double-stranded molecules of nucleic acids such as DNA and RNA. The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure, and is a fundamental component in determining its tertiary structure. The term entered popular culture with the publication in 1968 of The Double Helix: A Personal Account of the Discovery of the Structure of DNA, by James Watson.The DNA double helix is a spiral polymer of nucleic acids, held together by nucleotides which base pair together.[2] In B-DNA, the most common double helical structure, the double helix is right-handed with about 10-10.5 nucleotides per turn.[3] The double helix structure of DNA contains a major groove and minor groove, the major groove being wider than the minor groove.[2] Given the difference in widths of the major groove and minor groove, many proteins which bind to DNA do so through the wider major groove.[4]
Why is DNA replication caled semiconverative?
Because when the two strands of the double helix are unwound for replication each strand acts as a template to replicate a new strand onto. So, you get four strands, two pair. One of that pair is a new strand and one of the pair is the old strand that was the template strand.
How does the shape or RNA differ from the shape of DNA?
DNA (deoxyribonucleic acid ) has double helix. a phosphate group, and 5 carbon sugar back bone. DNA also has 4 nucleotides that pair, Adenine to Thymine and Guanine to Cytosine. RNA (ribonucleic acid) is a single strand with 5-carbon sugar that has one more oxygen than DNA. The nucleotides in RNA pair Adenine To URACIL, Guanine to Cytosine, and Thymine to Adenine (These pairings happen when the RNA is copying the DNA).
Does RNA exist in double helix?
No RNA is a single-stranded chain of nucleotides. The double helix is formed by two nucleotide strands of DNA not RNA. RNA can form secondary structures, but not the double helix seen with DNA.
What Hydrogen bonds between adenine and thymine or guanine and cytosine form that join the two strands of the DNA double helix?
Well they first get married to each other then take a dump in the toilet.
Why are guanine and cytosine and they and adenine useful in the DNA molecules?
Guanine is a purine and Cytosine is a pyrimidine. They are nucleotides that pair together. The two are useful in DNA molecules because they pair together, along with Adenine and Thymine, which build a double helix. Guanine, Adenine, Thymine, and Cytosine are all nitrogenous bases.
