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when a purine base only pairs with a pyrimidine
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When a purine base only pairs with a pyrimidine what is it called?
I dont know what its called nuka..
In DNA A pairs with?
A stands for adenine, one of the four nitrogen-containing bases in DNA. By the rules of complementary base pairing, A always pairs with T (thymine). Adenine is a purine (a base with a double ring structure). T is a pyrimidine (a base with a single ring structure). Each pair of bases always consists of a purine and a pyrimidine. A and T form two hydrogen bonds between them; G and C form three. For more information see: http://www.phschool.com/science/biology_place/biocoach/dnarep/helix.html and http://www.phschool.com/science/biology_place/biocoach/dnarep/chembase.html
How many rings does a purine have?
there are double rings in the purine bases and there is only a single ring in the pyrimidine base.
Purines and pyrimidines are what?
The purines are Adenine and Guanine nucleotides; while the pyrimidines are Cytosine, Thymine - and Uracil in Rna - nucleotides. They are the 'beads' that make up the immense chain of nucleotide bases in Dna. A, C, G, T & U: Adenine - represented by an A; Cytosine - represented by a C; Guanine - represented by a G; Thymine (Dna only) - represented by a T; and Uracil (Rna only) - represented by a U. A pyrimidine is a single ringed base. The three kinds are; Cytosine, Thymine (in Dna) and Uracil (only in Rna). A purine is a double ringed base. the two kinds are; Adenine and Guanine. Adenine pairs with Thymine in Dna - or Uracil in Rna; Guanine pairs with Cytosine in both Dna and Rna.
Why do the purine and pyrimidine bases always pair together?
It has to do with the size of each molecule. One is large (double ring) and the other is small (single ring). By having them pair with each other, the spacing along the length of DNA or RNA is kept uniform.
Where a purine base only pairs with a pyrimidine?
nitrogen
When a purine base only pairs with a pyrimidine what is it called?
I dont know what its called nuka..
What are the complimentary base paring?
The rules for base parings in DNA and RNA, are rather simple purines pair with pyrimidines; adenine pairs with thymine and guanine pairs with cytosine In all cases, purines pair with pyrimidines Specifically in DNA, adenine (a purine) pairs with thymine (a pyrimidine) and Guanine (a purine) pairs with cytosine (a pyrimidine) While in RNA, the same simple rules apply, the only difference being uracil replaces thymine adenine (a purine) pairs with uracil (a pyrimidine) and Guanine (a purine pairs with cytosine (a pyrimidine)
How many adenine bases are there if you have 112 purine bases and 64 cytosine bases?
There is no way to tell, since adenine is a purine base, but not the only one. Cytosine is a pyrimidine base. So it can be anything from 0 to 112!
In DNA A pairs with?
A stands for adenine, one of the four nitrogen-containing bases in DNA. By the rules of complementary base pairing, A always pairs with T (thymine). Adenine is a purine (a base with a double ring structure). T is a pyrimidine (a base with a single ring structure). Each pair of bases always consists of a purine and a pyrimidine. A and T form two hydrogen bonds between them; G and C form three. For more information see: http://www.phschool.com/science/biology_place/biocoach/dnarep/helix.html and http://www.phschool.com/science/biology_place/biocoach/dnarep/chembase.html
How many rings does a purine have?
there are double rings in the purine bases and there is only a single ring in the pyrimidine base.
Does DNA or RNA have uracil?
purine. I remember cytosine, guamine, and uracil are pyrimindine because the word pyrimidine makes me think of the word pryamid and there are THREE pyrimidines which spell the word CUT :) hope that helps :)
Nitrogenous bases of the purine type?
In DNA cytosine and thymine are pyrimidine derivatives. Uracil (in RNA) is also a pyrimidine. Pyrimidines have only one 6-membered ring.
Purines and pyrimidines are what?
The purines are Adenine and Guanine nucleotides; while the pyrimidines are Cytosine, Thymine - and Uracil in Rna - nucleotides. They are the 'beads' that make up the immense chain of nucleotide bases in Dna. A, C, G, T & U: Adenine - represented by an A; Cytosine - represented by a C; Guanine - represented by a G; Thymine (Dna only) - represented by a T; and Uracil (Rna only) - represented by a U. A pyrimidine is a single ringed base. The three kinds are; Cytosine, Thymine (in Dna) and Uracil (only in Rna). A purine is a double ringed base. the two kinds are; Adenine and Guanine. Adenine pairs with Thymine in Dna - or Uracil in Rna; Guanine pairs with Cytosine in both Dna and Rna.
Why are adenine and thymine bonded with two hydrogene bonds?
Adenine does form a base pair with thymine (linked with two hydrogen bonds). Cytosine does form a base pair with guanine (linked with three hydrogen bonds). Both the number of the bounds and the spatial location of these bonds ensure that the correct bases pair in the double string DNA. Nitpicking: Note that adenine can of course bind with all the bases (A,T,C,G) otherwise a DNA sequence like CAG would be impossible.
Why do the purine and pyrimidine bases always pair together?
It has to do with the size of each molecule. One is large (double ring) and the other is small (single ring). By having them pair with each other, the spacing along the length of DNA or RNA is kept uniform.
State the base-pairing rules in DNA?
Adenine binds toThymineCytosinebinds toGuanineThe shapes of the bases are specific and can only fit their complimentary base. Hydrogen bonds hold them together. In RNA Thymine is replaced by Uracil.
