20. Carbohydrates

Which plant-based polysaccharide possesses only a-1,4 glycosidic linkages?

Hydrolysis of both glycosidic bonds in the following trisaccharide A, B, C yields three monosaccharides. 

c. Draw the Fischer projections for the three monosaccharides.

Are one or more of the disaccharides maltose, lactose, cellobiose, and sucrose part of the trisaccharide in Problem 20.23? If so, identify which disaccharide and its location. (Hint: Look for an α-1,4 link, β-1,4 link, or 1,2 link, and then determine if the correct monosaccharides are present.)

Amylose (a form of starch) and cellulose are both polymers of glucose. What is the main structural difference between them? What roles do these two polymers have in nature?

How are amylose and amylopectin similar to each other, and how are they different from each other?