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Which of the following pairs of carbohydrates will afford the same product from a Wohl degradation?


A) Xylose/glucose
B) Ribose/arabinose
C) Fructose/mannose
D) Lyxose/threose

Correct Answer

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Which sugar is represented by the line angle structure below? Which sugar is represented by the line angle structure below? A) D-fructose B) D-sorbose C) L-psicose D) L-tagatose


A) D-fructose
B) D-sorbose
C) L-psicose
D) L-tagatose

Correct Answer

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Which of the following is a reducing sugar? Which of the following is a reducing sugar? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

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What is the composition of sucrose?


A) Two glucose units with a a-1,4'-glycoside bond
B) One glucose and one fructose unit with a a-glycosidic bond to the 2' carbon of a fructofuranose ring
C) One galactose and one glucose unit with a b-1,4'-glycoside bond
D) Repeating unit of glucose units joined in a b-1,4'-glycosidic linkage

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The following reaction is an example of a base-catalyzed epimerization reaction in which a ketose is converted to a pair of aldoses.What are the products from this reaction? The following reaction is an example of a base-catalyzed epimerization reaction in which a ketose is converted to a pair of aldoses.What are the products from this reaction? A) D-glucose and D-mannose B) D-galactose and D-talose C) D-talose and D-idose D) D-glucose and D-idose


A) D-glucose and D-mannose
B) D-galactose and D-talose
C) D-talose and D-idose
D) D-glucose and D-idose

Correct Answer

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Which of the following compounds is an aldose? Which of the following compounds is an aldose? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

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Amylose is a polysaccharide with ________ linkages.


A) b-1,4'-glycosidic
B) a-1,4'-glycosidic
C) b-1,6'-glycosidic
D) a-1,6'-glycosidic

Correct Answer

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What is the composition of maltose?


A) Two glucose units with a a-1,4'-glycoside bond
B) One glucose and one fructose unit with a a-glycosidic bond to the 2' carbon of a fructofuranose ring
C) One galactose and one glucose unit with a b-1,4'-glycoside bond
D) Repeating unit of glucose units joined in a b-1,4'-glycosidic linkage

Correct Answer

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Which is the correct Haworth projection for the banomer of D-glucose? Which is the correct Haworth projection for the banomer of D-glucose? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

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What is the correct chair form for the banomer of D-glucose? What is the correct chair form for the banomer of D-glucose? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

Correct Answer

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From the disaccharides listed below,which one will not undergo mutarotation?


A) Sucrose
B) Maltose
C) Lactose
D) Xylobiose

Correct Answer

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What are the products of the following reaction? What are the products of the following reaction? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

Correct Answer

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Which of the following best describes the relationship between D-glucose and D-fructose?


A) Enantiomers
B) Epimers
C) Anomers
D) Constitutional isomers

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From the sugars shown below,which one will not give a positive test with Tollens reagent? From the sugars shown below,which one will not give a positive test with Tollens reagent? A) A B) B C) C D) D


A) A
B) B
C) C
D) D

Correct Answer

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Which of the following compounds is not a valid representation for D-glucose? Which of the following compounds is not a valid representation for D-glucose? A) A B) B C) C D) D E) E


A) A
B) B
C) C
D) D
E) E

Correct Answer

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What is the best description of the product formed in the following reaction sequence? What is the best description of the product formed in the following reaction sequence? A) The product is an optically active aldonic acid. B) The product is an optically inactive aldonic acid. C) The product is an optically active aldaric acid. D) The product is an optically inactive aldaric acid.


A) The product is an optically active aldonic acid.
B) The product is an optically inactive aldonic acid.
C) The product is an optically active aldaric acid.
D) The product is an optically inactive aldaric acid.

Correct Answer

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Which of the following reagents will selectively oxidize an aldose to an aldonic acid?


A) PCC
B) Ag2O in NH4OH
C) FeCl3
D) HNO3

Correct Answer

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Which of the following is D-sorbose? Which of the following is D-sorbose? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

Correct Answer

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What is the Fischer projection of the monosaccharide from which the following glycoside was prepared? What is the Fischer projection of the monosaccharide from which the following glycoside was prepared? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

Correct Answer

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Does a monosaccharide prefer to exist in the open-chain or closed-ring form?


A) Open
B) Closed
C) Both forms exist in equal ratios.

Correct Answer

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