2006-11-07 13:16:35 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Biology
In DNA deoxyribose-phosphate backbone and nitrogenous bases. The bases of DNA are adenine, cytosine, guanine and thymine. In RNA ribose-phosphate backbone and nitrogenous bases are adenine, cytosine, guanine and uracil. A deoxyribose-phosphate backbone is essentially a pentonse sugar (5 carbons) linked to a phosphate group in a 5' to 3' direction. The bases are connected to the 1' end of the ribose groups. Pairing occurs by hydrogen bonding between A+T, A+U, and G+C between two strands.
2006-11-07 13:33:18 · answer #1 · answered by student_doctor_chris 2 · 0⤊ 2⤋
The subunits of DNA is called a nucleotide. A nucleotide consists of a deoxyribose sugar, a phosphate group and one of four nitrogen bases (adenine, thymine, guanine and cytosine).
RNA is the same but contains ribose, rather than the deoxyribose found in DNA and also has uracil instead of thymine.
2006-11-09 04:13:46 · answer #2 · answered by Aquamarine 4 · 1⤊ 0⤋
DNA stands for Deoxyribonucleic acid and it is composed of adenine, cytosine,guanine, and thymine. RNA stands for ribonucleic acid and is composed of adenine, cytosine,uracil, and guanine. It does not contain thymine. Unlike DNA, RNA is a single stranded molecule.
2006-11-07 13:24:35 · answer #3 · answered by mary 2 · 0⤊ 1⤋