Question 1

One advantage of branched sugar polymers is the availability of more ends for chemical reaction.

Accepted Answer

A) True 
 B)False

Question 2

Diastereomers are

Accepted Answer

A)   mirror-image, nonsuperimposable stereoisomers.
B)   non-mirror-image, nonsuperimposable stereoisomers.
C)   stereoisomers with one or more double bonds.
D)   none of the above.E) B) and C)
F) A) and B)

Question 3

For a D-sugar, any group that is written to the right of the carbon in a Fischer projection

Accepted Answer

A)   has an upward projection in a Haworth projection.
B)   has a downward projection in a Haworth projection.
C)   may be either up or down in a Haworth projection, it depends on the individual sugar.
D)   is missing from a Haworth projection.E) B) and D)
F) B) and C)

Question 4

The following sugar is also called blood sugar:

Accepted Answer

A)   Fructose
B)   Glucose
C)   Lactose
D)   Sucrose
E)   MaltoseF) B) and C)
G) None of the above

Question 5

Which of the following monosaccharides is an aldose

Accepted Answer

A)   glucose
B)   galactose
C)   mannose
D)   ribose
E)   all of themF) C) and D)
G) A) and C)

Question 6

Maltose is composed of the following simple sugars

Accepted Answer

A)   galactose only
B)   glucose only
C)   fructose only
D)   galactose and glucose
E)   glucose and fructoseF)  galactose and fructoseG) B) and F)
H) A) and E)

Question 7

Exhibit 16A A carbohydrate Fischer projection.  Refer to Exhibit 16BA Which of the following figures represents the Haworth projection of the carbohydrate shown?

Accepted Answer

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

Question 8

Cellulose is indigestible to most animals because

Accepted Answer

A)   animals do not have the enzymes needed to hydrolyze ester linkages between the monomer units
B)   animals do not have the enzymes needed to hydrolyze the α -glycosidic linkages between the monomer units
C)   animals do not have the enzymes needed to hydrolyze the β -glycosidic linkages between the monomer units
D)   its molecular weight is too high for it to be degraded by enzymesE) None of the above
F) A) and C)

Question 9

Exhibit 16B  Refer to Exhibit 16B. Epimers of D-Glucose include:

Accepted Answer

A)   D-Fructose and L-Glucose
B)   D-Glucose and L-Glucose
C)   L-Glucose and L-Idose
D)   L-Idose and D-Galactose
E)   L-Glucose and D-GalactoseF) A) and B)
G) A) and C)

Question 10

Insoluble fiber in the diet is better at better at providing bulk and stimulating peristaltic action than soluble fiber.

Accepted Answer

A) True 
 B)False

Question 11

Exhibit 16B  Refer to Exhibit 16B. The enantiomer of D-glucose is:

Accepted Answer

A)   D-Fructose
B)   D-Glucose
C)   L-Glucose
D)   L-Idose
E)   D-GalactoseF) A) and B)
G) C) and E)

Question 12

Aldoses can form which type of cyclic structure?

Accepted Answer

A)   Hemiacetal
B)   Hemiketal
C)   Both hemiacetal and hemiketal
D)   Neither hemiacetal and hemiketalE) B) and D)
F) All of the above

Question 13

The difference between cellobiose and maltose is:

Accepted Answer

A)   one contains glucose and the other fructose
B)   they contain different monosaccharides
C)   they both contain glucose units but are connected together at different carbons
D)   one has an á linkage and the other a â linkage
E)   there is no difference between the twoF) B) and E)
G) A) and E)

Question 14

Which of the following artificial sweeteners is a chemical derivative of sucrose?

Accepted Answer

A)   saccharin
B)   cyclamates
C)   sucralose
D)   aspartameE) A) and D)
F) None of the above

Question 15

Which of the following statements concerning sugar polymers is false ?

Accepted Answer

A)   Branched polymers have one non-reducing end and many reducing ends.
B)   Linear polymers are more water-soluble than branched ones.
C)   Branched polymers are more water-soluble than linear ones.
D)   Sugar polymers may vary both in the composition of the sugar monomers and in the types of connecting glycosidic bonds.E) B) and C)
F) All of the above

Question 16

A major difference between amylose and amylopectin is that

Accepted Answer

A)   amylose is connected by α (1 − 4)  bonds and amylopectin is connected by β (1 − 4)  bonds.
B)   amylose is branched and amylopectin is not.
C)   amylopectin is branched and amylose is not.
D)   each is composed different types of sugar residues.E) B) and C)
F) A) and D)

Question 17

Glycogen is

Accepted Answer

A)   polysaccharide storage polymer found in plants
B)   a linear polysaccharide
C)   a highly branched polysaccharide found in animals
D)   a synthetic sugar substituteE) B) and C)
F) B) and D)

Question 18

The following sugar is also called milk sugar:

Accepted Answer

A)   Fructose
B)   Glucose
C)   Lactose
D)   Sucrose
E)   MaltoseF) C) and E)
G) C) and D)

Question 19

Blood typing depends on

Accepted Answer

A)   the nature of the oligosaccharide portion of glycoproteins on the surface of red blood cells
B)   the presence of a polysaccharide coating on red blood cells
C)   the presence of a polysaccharide coating on white blood cells
D)   the addition of sucrose to blood before storageE) All of the above
F) A) and D)

Question 20

Lactose intolerance

Accepted Answer

A)   arises from inability to metabolize the disaccharide lactose
B)   depends on a deficiency of sucrose in the diet
C)   is based on the composition of lactose, consisting glucose and fructose in glycosidic linkage
D)   arises because lactose is a dimer of galactoseE) C) and D)
F) None of the above

Exam 16: Carbohydrates

Diastereomers are

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Which of the following monosaccharides is an aldose

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Which of the following artificial sweeteners is a chemical derivative of sucrose?

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Exhibit 16A A carbohydrate Fischer projection. Refer to Exhibit 16BA Which of the following figures represents the Haworth projection of the carbohydrate shown?

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The following sugar is also called milk sugar:

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Which of the following statements concerning sugar polymers is false ?

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A major difference between amylose and amylopectin is that

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Maltose is composed of the following simple sugars

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The difference between cellobiose and maltose is:

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Blood typing depends on

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Aldoses can form which type of cyclic structure?

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Exhibit 16B Refer to Exhibit 16B. Epimers of D-Glucose include:

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The following sugar is also called blood sugar:

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One advantage of branched sugar polymers is the availability of more ends for chemical reaction.

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Insoluble fiber in the diet is better at better at providing bulk and stimulating peristaltic action than soluble fiber.

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Exhibit 16B Refer to Exhibit 16B. The enantiomer of D-glucose is:

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Cellulose is indigestible to most animals because

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Glycogen is

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Lactose intolerance

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For a D-sugar, any group that is written to the right of the carbon in a Fischer projection

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