Adenine. Guanine. Cytosine. Thymine. Uracil.
It is highly organic in nature. The long "fatty" tail of Carbon/Hydrogen is hydrophobic (doesn't like water). It will clump together in an aqueous solution like an oil rather than dissolve.
monomer of nucleic acids are a sugar, phosphate group, and a nitrogenous base
yes
im pretty sure they are nucleotides