Exam 25: Carbohydrates

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a sugar which yields a single alditol upon reduction.

Identify the given compound. ​

Match the following compounds used to produce rayon and acetate rayon with the most appropriate roles. -Causes fibers to dissolve in an alkali

Which of the following is not a polysaccharide?

What is the relationship between D-erythrose and D-threose?

What is the major organic product obtained from the following reduction of glucose?

The following monosaccharide has ________ equatorial hydroxyl groups.

What is the major organic product obtained from the reaction of glucose with glucose oxidase?

The formula for maltose is: The number of the acetal carbon is _____.

A glycoside is formed upon reaction of glucopyranose with NaBH₄.

What is the relationship between D-arabinose and L-arabinose?

What are the R/S stereochemical designations of C2 and C3 of D-erythrose?

Complete the structure on the right so that it represents the pyranose form of the carbohydrate shown on the left as a Fischer projection. Place the substituents carefully so that their position in axial or equatorial positions accurately reflects the stereochemistry of the carbohydrate.

Consider the structure shown below. The Haworth projection formula for the pyranose form of β-D-galactose is given below.

What is the major organic product obtained from the following reaction?

Reduction of an optically active aldopentose with NaBH₄ gives an optically inactive alditol. The aldopentose could be:

Which carbon in the following carbohydrate is the anomeric carbon?

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a D-sugar.

What is (are) the major organic product(s) obtained from the following reaction?

From the sugars below, choose the one that best fits each description below. Place the letter of the sugar in the blank to the left of the description. There is only one correct answer for each question. -_____ is a deoxy sugar.