Question 1

The enzyme _____ from _____ allows animals such as cows to derive energy from cellulose.

Accepted Answer

A)   chitinase; termites
B)   cellulase; microorganisms
C)   glucosyltransferase; viruses
D)   lactase; microorganisms
E)   none of the above

Question 2

In eukaryotes, intracellular proteins can be glycosylated by attachment of ___ to a ___ residue.

Accepted Answer

N-acetylgl...

Question 3

Which two monosaccharides seen below are epimers?

Accepted Answer

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

Question 4

Which of the following is glucose-6-phosphate?

Accepted Answer

A)   
B)   
C)   
D)   
E)   none of the above

Question 5

The three-carbon monosaccharide _____ is a(n)  _____.

Accepted Answer

A)   dihydroxyacetone; enantiomer
B)   fructose; triose
C)   ribose; hemiacetal
D)   galactose; ketose
E)   glyceraldehyde; aldose

Question 6

Milk contains many oligosaccharides that cannot be digested by mammalian enzymes but instead are thought to serve as a source of nutriment for intestinal bacteria.

Accepted Answer

A) True 
 B)False  True

Question 7

Which of the following Haworth projections correctly shows the   α\alphaα   anomer of galactose?

Accepted Answer

A)   
B)   
C)   
D)   
E)   none of the above

Question 8

The reaction between an alcohol and an anomeric carbon of a carbohydrate forms a _____ bond.

Accepted Answer

A)   anomeric
B)   glycosidic
C)   hemiacetal
D)   ester
E)   ether

Question 9

Chondroitin sulfate, shown below, contains which of the following?

Accepted Answer

A)   a   β\betaβ  (1  →\rarr→  3)  glycosidic bond
B)   a   β\betaβ  (1  →\rarr→  4)  glycosidic bond
C)   a glucuronic acid residue
D)   a sulfate ester of N-acetylgalactosamine
E)   all of the above

Question 10

Which of the following best describes the relationship between the following molecules?

Accepted Answer

A)   epimers
B)   anomers
C)   diastereomers
D)   pentoses
E)   one is a D sugar, one is an L sugar

Question 11

Which monosaccharide(s)  seen below is(are)  the enantiomer(s)  of A?

Accepted Answer

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

Question 12

Which of the following is a major difference between cellulose and chitin?

Accepted Answer

A)   chitin is produced by insects, cellulose is produced by plants
B)   chitin contains glucose and glucosamine, cellulose contains only glucose
C)   chitin contains   β\betaβ  (1  →\rarr→  6)  glycosidic bonds, cellulose contains  β\betaβ  (1  →\rarr→  4)  glycosidic bonds
D)   chitin is a branched polymer, cellulose is linear
E)   none of the above

Question 13

What is the only monosaccharide that is achiral?

Accepted Answer

A)   glyceraldehyde
B)   ribose
C)   galactose
D)   dihydroxyacetone
E)   fructose

Question 14

Amylopectin contains primarily _____ glycosidic bonds with _____ glycosidic bonds as branch points.

Accepted Answer

A)     α\alphaα  (1  →\rarr→  4) ;   α\alphaα  (1  →\rarr→  2) 
B)     α\alphaα  (1  →\rarr→  4) ;   α\alphaα  (1  →\rarr→  6) 
C)     α\alphaα  (1  →\rarr→  4) ;   β\betaβ  (1  →\rarr→  6) 
D)     β\betaβ  (1  →\rarr→  4) ;   α\alphaα  (1  →\rarr→  ) 
E)     β\betaβ  (1  →\rarr→  4) ;   α\alphaα  (1  →\rarr→  6)

Question 15

The molecular formula for a monosaccharide is _____ where _____.

Accepted Answer

A)   CnH2n+2On; n  nH2n+2On; n     3 
B)   CnH2nOn; n   \ge   3 
C)   CnH2nOn; n   \ge  4 
D)   CnH2n+2On; n     4 
E)   none of the above " class="answers-bank-image d-inline" rel="preload" >  3
B)   CnH2nOn; n   ≥\ge≥   3
C)   CnH2nOn; n   ≥\ge≥  4
D)   CnH2n+2On; n    4
E)   none of the above

Question 16

The following is a(n)  _____ disaccharide with a(n)  _____ glycosidic bond.

Accepted Answer

A)     α\alphaα  ;   β\betaβ  (1  →\rarr→  4) 
B)     α\alphaα  ;   β\betaβ  (1  →\rarr→  1) 
C)     β\betaβ  ;   α\alphaα  (1  →\rarr→  4) 
D)     β\betaβ  ;   α\alphaα  (1  →\rarr→  1) 
E)     β\betaβ  ;   β\betaβ  (1  →\rarr→  4)

Question 17

At equilibrium in solution, D-glucose consists of a mixture of its anomers. Which statement most accurately describes the solution?

Accepted Answer

A)   consists of approximately equal amounts of the   α\alphaα  - and   β\betaβ  -anomers
B)   the   α\alphaα  -anomer is more stable and is slightly preferred over the   β\betaβ  -anomer
C)   the   β\betaβ  -anomer predominates over the   α\alphaα  -anomer by a ratio of approximately 2:1
D)   straight-chain form is present in high concentration
E)   none of the above

Question 18

What glycosidic bonds are seen in the following portion of an N-linked oligosaccharide? Abbreviations: galactose: Gal; glucose: Glu; N-acetylglucosamine: NAG

Accepted Answer

A)   F  α\alphaα  (1  →\rarr→  4)  between Gal and NAG;   β\betaβ  (1  →\rarr→  6)  between Glu and NAG
B)      β\betaβ   (1  →\rarr→  4)  between Gal and NAG;   α\alphaα  (1  →\rarr→  3)  between Glu and NAG
C)     β\betaβ  (1  →\rarr→  3)  between Gal and NAG;   α\alphaα  (1  →\rarr→  4)  between Glu and NAG
D)     α\alphaα  (1  →\rarr→  4)  between Gal and NAG;   β\betaβ  (1  →\rarr→  3)  between Glu and NAG
E)     β\betaβ    (1  →\rarr→  4)  between Gal and NAG;   β\betaβ  (1  →\rarr→  3)  between Glu and NAG

Question 19

Which of the following would be positively charged at physiological pH?

Accepted Answer

A)   glucuronic acid
B)   fructose-6-phosphate
C)   xylitol
D)   glucosamine
E)   all of the above D

Question 20

Processing of N-glycosylated proteins within the Golgi apparatus involves the removal of monosaccharides by _____ and addition of new monosaccharides by _____.

Accepted Answer

A)   glycosidases; glycosyltransferases
B)   epimerases; glycosidases
C)   cellulases; lactases
D)   glycosyltransferases; N-amidases
E)   proteases; glycosylases

Exam 11: Carbohydrates

The enzyme _ from _ allows animals such as cows to derive energy from cellulose.

Correct Answer
verified

In eukaryotes, intracellular proteins can be glycosylated by attachment of _ to a _ residue.

Correct Answer
verified
N-acetylgl...
View Answer

Which two monosaccharides seen below are epimers?

Correct Answer
verified
A

Which of the following is glucose-6-phosphate?

Correct Answer
verified

The three-carbon monosaccharide _ is a(n) _.

Correct Answer
verified

Milk contains many oligosaccharides that cannot be digested by mammalian enzymes but instead are thought to serve as a source of nutriment for intestinal bacteria.

Correct Answer
verified
True

Which of the following Haworth projections correctly shows the $\alpha$ anomer of galactose?

Correct Answer
verified

The reaction between an alcohol and an anomeric carbon of a carbohydrate forms a _____ bond.

Correct Answer
verified

Correct Answer
verified

Which of the following best describes the relationship between the following molecules?

Correct Answer
verified

Which monosaccharide(s) seen below is(are) the enantiomer(s) of A?

Correct Answer
verified

Which of the following is a major difference between cellulose and chitin?

Correct Answer
verified

What is the only monosaccharide that is achiral?

Correct Answer
verified

Amylopectin contains primarily _ glycosidic bonds with _ glycosidic bonds as branch points.

Correct Answer
verified

The molecular formula for a monosaccharide is _ where _.

Correct Answer
verified

The following is a(n) ___ disaccharide with a(n) _ glycosidic bond. $The following is a(n) _ disaccharide with a(n) ___ glycosidic bond. A) \alpha ; \beta (1 \rarr 4) B) \alpha ; \beta (1 \rarr 1) C) \beta ; \alpha (1 \rarr 4) D) \beta ; \alpha (1 \rarr 1) E) \beta ; \beta (1 \rarr 4)$

Correct Answer
verified

At equilibrium in solution, D-glucose consists of a mixture of its anomers. Which statement most accurately describes the solution?

Correct Answer
verified

Correct Answer
verified

Which of the following would be positively charged at physiological pH?

Correct Answer
verified
D

Processing of N-glycosylated proteins within the Golgi apparatus involves the removal of monosaccharides by _ and addition of new monosaccharides by _.

Correct Answer
verified

Exam 11: Carbohydrates

The enzyme _____ from _____ allows animals such as cows to derive energy from cellulose.

Correct AnswerverifiedShow Answer

In eukaryotes, intracellular proteins can be glycosylated by attachment of ___ to a ___ residue.

Correct AnswerverifiedN-acetylgl...View AnswerShow Answer

Which two monosaccharides seen below are epimers?

Correct AnswerverifiedA

Which of the following is glucose-6-phosphate?

Correct AnswerverifiedShow Answer

The three-carbon monosaccharide _____ is a(n) _____.

Correct AnswerverifiedShow Answer

Milk contains many oligosaccharides that cannot be digested by mammalian enzymes but instead are thought to serve as a source of nutriment for intestinal bacteria.

Correct AnswerverifiedTrue

Which of the following Haworth projections correctly shows the α\alphaα anomer of galactose?

Correct AnswerverifiedShow Answer

The reaction between an alcohol and an anomeric carbon of a carbohydrate forms a _____ bond.

Correct AnswerverifiedShow Answer

Chondroitin sulfate, shown below, contains which of the following?

Correct AnswerverifiedShow Answer

Which of the following best describes the relationship between the following molecules?

Correct AnswerverifiedShow Answer

Which monosaccharide(s) seen below is(are) the enantiomer(s) of A?

Correct AnswerverifiedShow Answer

Which of the following is a major difference between cellulose and chitin?

Correct AnswerverifiedShow Answer

What is the only monosaccharide that is achiral?

Correct AnswerverifiedShow Answer

Amylopectin contains primarily _____ glycosidic bonds with _____ glycosidic bonds as branch points.

Correct AnswerverifiedShow Answer

The molecular formula for a monosaccharide is _____ where _____.

Correct AnswerverifiedShow Answer

The following is a(n) _____ disaccharide with a(n) _____ glycosidic bond.

Correct AnswerverifiedShow Answer

At equilibrium in solution, D-glucose consists of a mixture of its anomers. Which statement most accurately describes the solution?

Correct AnswerverifiedShow Answer

What glycosidic bonds are seen in the following portion of an N-linked oligosaccharide? Abbreviations: galactose: Gal; glucose: Glu; N-acetylglucosamine: NAG

Correct AnswerverifiedShow Answer

Which of the following would be positively charged at physiological pH?

Correct AnswerverifiedD

Processing of N-glycosylated proteins within the Golgi apparatus involves the removal of monosaccharides by _____ and addition of new monosaccharides by _____.

Correct AnswerverifiedShow Answer

The enzyme _ from _ allows animals such as cows to derive energy from cellulose.

Correct Answer
verified

In eukaryotes, intracellular proteins can be glycosylated by attachment of _ to a _ residue.

Correct Answer
verified
N-acetylgl...
View Answer

Correct Answer
verified
A

Correct Answer
verified

The three-carbon monosaccharide _ is a(n) _.

Correct Answer
verified

Correct Answer
verified
True

Which of the following Haworth projections correctly shows the $\alpha$ anomer of galactose?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Amylopectin contains primarily _ glycosidic bonds with _ glycosidic bonds as branch points.

Correct Answer
verified

The molecular formula for a monosaccharide is _ where _.

Correct Answer
verified

The following is a(n) ___ disaccharide with a(n) _ glycosidic bond. $The following is a(n) _ disaccharide with a(n) ___ glycosidic bond. A) \alpha ; \beta (1 \rarr 4) B) \alpha ; \beta (1 \rarr 1) C) \beta ; \alpha (1 \rarr 4) D) \beta ; \alpha (1 \rarr 1) E) \beta ; \beta (1 \rarr 4)$

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Processing of N-glycosylated proteins within the Golgi apparatus involves the removal of monosaccharides by _ and addition of new monosaccharides by _.

Correct Answer
verified