(1) Nitrogen containing ring organic compound or heterocyclic compound. It can be adenine, guanine, cytosine, thymine (in DNA), uracil (in RNA).
(2) A pentose sugar. The pentose sugar is ribose in case of RNA and 2' deoxyribose in case of DNA.
(3) A molecule of phosphoric acid.
(2) P-protein. This transports organic materials through, phloem in plants.
(2) Ribonucleotide is the basic unit of RNA.