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en.wikipedia.org/wiki/Purine

A purine is a heterocyclic aromatic organic compound that consists of a pyrimidine ring fused to ... Purines are found in high concentration in meat and meat products, ... Purines and pyrimidines make up the two groups of nitrogenous bases, ... Aside from the crucial roles of purines (adenine and guanine) in DNA and RNA, ...

en.wikipedia.org/wiki/Ribonucleotide

In biochemistry, a ribonucleotide or ribotide is a nucleotide containing ribose as its pentose ... The nitrogenous bases are classified into two parent compounds, purine and ... The general structure of a ribonucleotide consists of a phosphate group, ... Both RNA and DNA contain two major purine bases, adenine (A) and ...

www.easynotecards.com/print_list/7775

4) The nitrogenous base adenine is found in all members of which group? A) proteins ... 5) A particular triplet of bases in the template strand of DNA is 5' AGT 3 '. ... 8) Which of the following nucleotide triplets best represents a codon?

www.coursehero.com/file/12606342/17

Nov 8, 2015 ... View Notes - 17 from BIO 93 at UC Irvine. The nitrogenous base adenine is found in all members of which group? A) proteins, triglycerides, and ...

www.discoveryandinnovation.com/BIOL202/study_guide/exam2key.html

Oct 15, 2013 ... (2 pts) Which of the following is not true regarding the structure of DNA? A. Each chain makes ... D. The purine adenine base pairs with the pyrimidine thymine. E. The paired ... C. Add methyl groups to DNA D. Facilitate base ...

www.mrothery.co.uk/genetics/dnanotes.htm

In DNA the sugar is deoxyribose. a nitrogenous base. ... The base thymine is found in DNA only and the base uracil is found in RNA only. ... A polynucleotide has a free phosphate group at one end and a free OH group at the other ... Replication means that the DNA, with all its genes, must be copied every time a cell divides.

www.proprofs.com/flashcards/story.php?title=bio-17_2

The nitrogenous base adenine is found in all members of which group? ... A mutation results in a defective enzyme A. Which of the following would be a ...

www.mc3.edu/images/pdf/adm/placement/bio.pdf

4) Which of the following is/are characteristics of living organisms? A) Organized structure ... A) All members of Bacteria are single-celled and all members of Eukarya .... 31) If a DNA sample contains 13% adenine, what percentage of the sample contains cytosine? ..... A) Nitrogenous bases, sugar and phosphate groups.

www.sbs.utexas.edu/herrin/bio344/lectures/lecturespdf/Background/eSection5.pdf

Aug 24, 1998 ... used in place of thymine. Uracil can also base pair with adenine. .... How can the 4 nucleotides found in DNA encode the 20 different amino ... UCAG on the left, top and right sides represent nitrogenous bases in the codon. ... The codons GCU, GCC, GCA and GCG all encode the amino acid A (alanine).

www2.le.ac.uk/projects/vgec/schoolscolleges/topics/dna-genes-chromosomes

a nitrogenous base: cytosine (C), guanine (G), adenine (A) or thymine (T) ... Each of the sugar groups in this sugar-phosphate backbone is linked to one of the four ... of chromosomes comes from the mother (through the egg cell); one member of ... These relatively small circular DNA molecules usually contain genes that are ...