Adenosine, Guanosine, thymidine, uridine, cytidine are all ________ but adenylic acid, guanylic acid, uridylic acid, cytidylic acid are ______:
(a) Nucleotides, nucleosides (b) Nucleosides, nucleotides
(c) Nucleotides, nucleic acids (d) Nucleotides, nucleases
Adenosine, Guanosine, Thymidine, Uridine and Cytidine are nucleosides which consists of a nitrogenous base- purine or pyrimidine attached to sugar.
Whereas nucleotides are composed of nucleoside attached to a phosphate group.