Which of the Following Disaccharides Contains an α (1→4) O-Glycosidic

Question

Which of the following disaccharides contains an α (1→4) O-glycosidic bond?
A) sucrose
B) lactose
C) maltose
D) cellobiose
E) cellulose

Accepted Answer

Maltose is formed from two glucose monomers joined by an α (1→4) O-glycosidic bond. Sucrose is formed from glucose and fructose joined by a α (1→2) glycosidic bond, lactose is formed from glucose and galactose joined by a β (1→4) glycosidic bond, cellobiose is formed from two glucose units joined by a β (1→4) glycosidic bond, and cellulose is a polymer of glucose units joined by β (1→4) glycosidic bonds.