Nitrogenous base: Difference between revisions
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Nitrogenous bases are found in [[Nucleotide|nucleotides]]. There are four different nucleotides in DNA; [[Adenine|Adenine]] (A), [[Cytosine|Cytosine]] (C), [[Guanine|Guanine]] (G) and[[Thymine|Thymine]] (T) [1]. There is also a base called [[Uracil|Uracil ]] | Nitrogenous bases are found in [[Nucleotide|nucleotides]]. There are four different nucleotides in DNA; [[Adenine|Adenine]] (A), [[Cytosine|Cytosine]] (C), [[Guanine|Guanine]] (G) and[[Thymine|Thymine]] (T) [1]. There is also a base called [[Uracil|Uracil however]] this only occurs in RNA. These are then grouped as either a[[Purine|Purine]] (A and G) or a [[Pyrimidine|Pyrimidine ]](C and T in DNA and U in RNA). A Purine always pairs with a pyrimidine.Purines are also bigger in size that pyrimidines.Nitrogenous bases are the key to base pairing; A will always bind with T in [[DNA|DNA]] unless in RNA where A will bind with U. G and C will always bind together regarless whether it is DNA or RNA [1]. The nitrogenous base is one of the three components of of a nucleotide which in turn join up to form DNA. The three components of a nucleotide are a [[Phosphate_group|phosphate group]], a [[Pentose_sugar|pentose sugar]] and a nirtogenous base [2]. | ||
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Refrences | |||
[1] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition. 197-198. | |||
[1] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition. 197-198. | |||
[2] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition.116-117. | [2] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition.116-117. | ||
Revision as of 12:07, 21 October 2014
Nitrogenous bases are found in nucleotides. There are four different nucleotides in DNA; Adenine (A), Cytosine (C), Guanine (G) andThymine (T) [1]. There is also a base called Uracil however this only occurs in RNA. These are then grouped as either aPurine (A and G) or a Pyrimidine (C and T in DNA and U in RNA). A Purine always pairs with a pyrimidine.Purines are also bigger in size that pyrimidines.Nitrogenous bases are the key to base pairing; A will always bind with T in DNA unless in RNA where A will bind with U. G and C will always bind together regarless whether it is DNA or RNA [1]. The nitrogenous base is one of the three components of of a nucleotide which in turn join up to form DNA. The three components of a nucleotide are a phosphate group, a pentose sugar and a nirtogenous base [2].
Refrences
[1] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition. 197-198.
[2] Alberts, BA,Johnson, AJ,Lewis, JL, Raff,MR, Roberts, KR, Walters, PW. 2008. The Cell. Fifth Edition.116-117.