These nucleotides have three parts: 1) a five carbon ribose sugar, 2) a phosphate molecule and 3) one of four nitrogenous bases: adenine, guanine, cytosine or uracil.NA nucleotides form polymers of alternating ribose and phosphate units linked by a phosphodiester bridge between the #3 and #5 carbons of neighboring ribose molecules.
Define ready: prepared mentally or physically for some experience or action; prepared for immediate use â ready in a sentence prepared mentally or physically for some experience or action; prepared for immediate use; willingly disposed : inclinedâ¦
Definition of demand for English Language Learners. : 1  to say in a forceful way that something must be done or given to you : to say that you have a right to (something) : 2  to say or ask (something) in a very forceful way. : 3  to require (something)