Essays Tagged: "pyrimidine bases"

DNA.

ternating phosphate anddeoxyribose sugar molecules. The "steps" are formed bybonded pairs of purine-pyrimidine bases. DNAcontains four such bases the purines adenine (A) and guanine(G) and the pyrimid ... consists of a single chain. The RNA chaincontains ribose sugars instead of deoxyribose. In RNA, the pyrimidine uracil (U) replaces the thymineofDNA. DNA and RNA are made up of basic units called nucle ...

(4 pages) 90 1 3.0 Nov/2003

Subjects: Science Essays > Biology