Ribonucleotide triphosphates have high potential energy, making the polymerization reaction exergonic.

Ribonucleotides have a hydroxyl group on the 2 carbon of their sugar subunit

Adenosine is composed of adenine ( a purine) attached to ribose.

Joe Richard Cowles has written:

'Some properties of ribonucleotide reductase in Rhizobium species' -- subject- s -: Rhizobium

It also means guanosine monophosphate: a ribonucleotide constituent of ribonucleic acid that is the phosphoric acid ester of the nucleoside guanosine. And, a third, in the medical dictionary is:GMP (jē'ěm-pē') a noun: A nucleotide composed of guanine, ribose, and one phosphate group that is formed during protein synthesis. Also called guanine ribonucleotide, guanylic acid ========== GMP means Good Manufacturing Practices