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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.

D) None of the above
E) B) and C)

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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

E) A) and C)
F) A) and B)

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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

E) None of the above
F) B) and C)

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From the sugars shown below, which one is a non-reducing sugar? From the sugars shown below, which one is a non-reducing sugar? A) A B) B C) C D) D


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

E) A) and D)
F) A) and C)

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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? <sup> </sup>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

E) A) and B)
F) B) and D)

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Upon hydrolysis of amylopectin, what sugar is formed?


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

E) All of the above
F) A) and D)

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Which of the following sugars can be classified as a ketotetrose? Which of the following sugars can be classified as a ketotetrose? A) A B) B C) C D) D


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

E) A) and D)
F) All of the above

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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

E) A) and B)
F) None of the above

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Upon hydrolysis of amylose, what sugar is formed?


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

E) A) and D)
F) All of the above

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After a series of Kiliani-Fischer syntheses on D-glyceraldehyde, an unknown sugar was isolated from the reaction mixture.The following experimental data was obtained.What is the structure of this unknown sugar? Data: - Molecular formula: C6H12O6 - Reacts with phenylhydrazine to give an osazone, mp 178°C.- Reacts with HNO3 to give an optically active aldaric acid.- Wohl degradation followed by HNO3 oxidation gives an optically inactive Aldaric acid.- Two Wohl degradations followed by HNO3 oxidation give a meso-tartaric acid. <sup> </sup>After a series of Kiliani-Fischer syntheses on D-glyceraldehyde, an unknown sugar was isolated from the reaction mixture.The following experimental data was obtained.What is the structure of this unknown sugar? Data: - Molecular formula: C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> - Reacts with phenylhydrazine to give an osazone, mp 178°C.- Reacts with HNO<sub>3</sub> to give an optically active aldaric acid.- Wohl degradation followed by HNO<sub>3</sub> oxidation gives an optically inactive Aldaric acid.- Two Wohl degradations followed by HNO<sub>3</sub> oxidation give a meso-tartaric acid. A) A B) B C) C D) D


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

E) B) and D)
F) A) and B)

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Which of the following sugars can be classified as a ketohexose? Which of the following sugars can be classified as a ketohexose? A) A B) B C) C D) D


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

E) B) and D)
F) A) and B)

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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

E) A) and D)
F) A) and B)

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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

E) C) and D)
F) A) and D)

Correct Answer

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What is the composition of lactose?


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

E) A) and B)
F) All of the above

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How many possible stereoisomers are there of the following heptose? How many possible stereoisomers are there of the following heptose? A) 16 B) 21 C) 32 D) 64


A) 16
B) 21
C) 32
D) 64

E) A) and C)
F) All of the above

Correct Answer

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Which is the correct Haworth projection for the aanomer of allose? Which is the correct Haworth projection for the aanomer of allose? A) A B) B C) C D) D


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

E) A) and D)
F) B) and D)

Correct Answer

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Which of the following sugars can be classified as an aldohexose? Which of the following sugars can be classified as an aldohexose? A) A B) B C) C D) D


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

E) None of the above
F) C) and D)

Correct Answer

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Upon hydrolysis of cellulose, what sugar is formed?


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

E) A) and B)
F) A) and D)

Correct Answer

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