Question 1

Which of the following is D-glucose?

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and B)
F) A) and C)

Question 2

What are the products of the following reaction?

Accepted Answer

A)   D
B)   A
C)   C
D)   BE) A) and B)
F) A) and C)

Question 3

Which of the following is D-fructose?

Accepted Answer

A)   I
B)   IV
C)   II
D)   IIIE) A) and C)
F) B) and C) A

Question 4

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.
 6H12O6 - 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.    A)  D B)  C C)  A D)  B" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   D
B)   C
C)   A
D)   BE) A) and D)
F) A) and C) C

Question 5

Amylose is a polysaccharide with ________ linkages.

Accepted Answer

A)   a-1,4'-glycosidic
B)   a-1,6'-glycosidic
C)   b-1,4'-glycosidic
D)   b-1,6'-glycosidicE) None of the above
F) A) and B)

Question 6

Cellulose is a polysaccharide with ________ linkages.

Accepted Answer

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

Question 7

What is the composition of sucrose?

Accepted Answer

A)   Repeating unit of glucose units joined in a b-1,4'-glycosidic linkage
B)   Two glucose units with a a-1,4'-glycoside bond
C)   One galactose and one glucose unit with a b-1,4'-glycoside bond
D)   One glucose and one fructose unit with a a-glycosidic bond to the 2' carbon of a fructofuranose ringE) None of the above
F) A) and D)

Question 8

What type of linkage is present in chitin?

Accepted Answer

A)   beta-1,2'-glycosidic linkage
B)   alpha-1,2'-glycosidic linkage
C)   alpha-1,4'-glycosidic linkage
D)   beta-1,4'-glycosidic linkageE) A) and B)
F) A) and C) D

Exam 23: Carbohydrates

Which of the following is D-glucose?

Correct Answer
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What are the products of the following reaction?

Correct Answer
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Which of the following is D-fructose?

Correct Answer
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A

Correct Answer
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C

Amylose is a polysaccharide with ________ linkages.

Correct Answer
verified

Cellulose is a polysaccharide with ________ linkages.

Correct Answer
verified

What is the composition of sucrose?

Correct Answer
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What type of linkage is present in chitin?

Correct Answer
verified
D

Exam 23: Carbohydrates

Which of the following is D-glucose?

Correct AnswerverifiedShow Answer

What are the products of the following reaction?

Correct AnswerverifiedShow Answer

Which of the following is D-fructose?

Correct AnswerverifiedA

Correct AnswerverifiedC

Amylose is a polysaccharide with ________ linkages.

Correct AnswerverifiedShow Answer

Cellulose is a polysaccharide with ________ linkages.

Correct AnswerverifiedShow Answer

What is the composition of sucrose?

Correct AnswerverifiedShow Answer

What type of linkage is present in chitin?

Correct AnswerverifiedD

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
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C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D