Multiple choice Which among the following biomolecules is a crystalline pentose alcohol? Actin Adenosine Adenylate cyclase Ribitol Reveal answer Fill a bubble to check yourself D Correct answer Explanation Ribitol is a crystalline pentose alcohol formed by the reduction of ribose. It occurs naturally in the plant Adonis vernalis, as well as in the cell walls of Gram positive bacteria .It also contributes to the chemical structure of riboflavin.