2. Biomolecules

Carbohydrates — Quiz

Test your understanding of carbohydrates with 5 practice questions.

Practice Questions

Question 1

Why is β-D-glucopyranose more thermodynamically stable than α-D-glucopyranose?

Question 2

Which reagent is used to cleave vicinal diols in monosaccharides, breaking the carbon–carbon bond between adjacent hydroxyl-bearing carbons?

Question 3

Which colorimetric test specifically distinguishes ketose sugars from aldose sugars by producing a red color more rapidly for ketoses?

Question 4

Which enzyme in human saliva catalyzes the hydrolysis of internal α-1,4-glycosidic bonds of starch to produce dextrins and maltose?

Question 5

In an aqueous solution of D-glucose at equilibrium, the observed optical rotation is +52.7°, given pure α-D-glucose has +112° and pure β-D-glucose has +18.7°. What is the equilibrium constant K = [β]/[α]?