What is the total number of -OH groups present in ribonucleoside?

Step-by-step solution

A ribonucleoside consists of a nitrogenous base attached to the ribose sugar at the C1' carbon via an N-glycosidic bond. The β-D-ribofuranose form of ribose contains hydroxyl groups at positions C1', C2', C3', and C5'. During nucleoside formation, the hydroxyl at C1' is replaced by the nitrogenous base, leaving hydroxyl groups at C2', C3', and C5'. 3