encode them, proteins are also informational macromolecules. The monomers ... A nucleotide has three components: a pentose sugar, either ribose (in RNA) or deoxyribose (in DNA), a nitrogen base, and a molecule of phos- phate, PO4. 3-. The general ...
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Walker,. John M., 1948â III. Title. QP519.7.P75 2009. 6120.015âdc22 2009043277. ISBN 978-0-521-51635-8 Hardback. ISB