<prompt> The monsaccharide glucose is best described by which one of the following statements?It usually exists in the furanose formIt is a ketoseIt possesses an anomeric C-2 carbon atomIt forms part of the disaccharide sucrose  <response>: Two monosaccharide units are linked by a glycosidic bond or yield 2 monosaccharide units on hydrolysis. Depending on their reducing property, they are divided into:Nonreducing disaccharides: The functional groups are involved in the glycosidic bond formation, hence free functional groups are not availableReducing disaccharides: Free functional groups are available.Key Concept:Glucose forms part of sucrose and is attached to fructose to form disaccharide i.e.,sucrose. 