Question 1

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

Question 2

Exhibit 16A   Refer to Exhibit 16A.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-Galactose 
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-Galactose

Question 3

Deoxyribose is best described as a(n):

Accepted Answer

A)  oxidized form of ribose 
B)  reduced pyranose 
C)  polyhydroxyl alcohol 
D)  glycoside 
E)  reduced form of a pentose 
A)  oxidized form of ribose 
B)  reduced pyranose 
C)  polyhydroxyl alcohol 
D)  glycoside 
E)  reduced form of a pentose

Question 4

Insoluble fiber in the diet is better at binding toxic substances than soluble fiber.

Accepted Answer

A) True 
 B)False

Question 5

The simplest ketotriose is

Accepted Answer

A)  glyceraldehyde. 
B)  dihydroxyacetone. 
C)  ribose. 
D)  glucose. 
E)  sucrose. 
A)  glyceraldehyde. 
B)  dihydroxyacetone. 
C)  ribose. 
D)  glucose. 
E)  sucrose.

Question 6

The linkage between the glucose residues in amylopectin and glycogen is:

Accepted Answer

A)  For the main chain a (1 4) and b (1 4) for the branches 
B)  For the main chain a (1 6) and a (1 4) for the branches 
C)  For the main chain a (1 4) and a (1 6) for the branches 
D)  For the main chain b (1 4) and b (1 6) for the branches 
E)  The linkage between the glucose residues is variable. 
A)  For the main chain a (1 4) and b (1 4) for the branches 
B)  For the main chain a (1 6) and a (1 4) for the branches 
C)  For the main chain a (1 4) and a (1 6) for the branches 
D)  For the main chain b (1 4) and b (1 6) for the branches 
E)  The linkage between the glucose residues is variable.

Question 7

Two samples containing identical mixtures of sugars are analyzed,one using Tollen's reagent,the other with glucose oxidase.Which will give a stronger reaction?

Accepted Answer

A)  Tollen's reagent 
B)  glucose oxidase 
C)  They will have identical strengths. 
D)  It's impossible to predict from the information provided. 
A)  Tollen's reagent 
B)  glucose oxidase 
C)  They will have identical strengths. 
D)  It's impossible to predict from the information provided.

Question 8

The blue color in a well-known test for the presence of starches is due to

Accepted Answer

A)  the formation of crosslinks between molecules of starch, caused by the addition of Cu2+ 
B)  the reaction of the silver-ammonia complex ion with the hydroxyl groups of the starch 
C)  the formation of a complex between iodine and amylose 
D)  none of these 
A)  the formation of crosslinks between molecules of starch, caused by the addition of Cu2+ 
B)  the reaction of the silver-ammonia complex ion with the hydroxyl groups of the starch 
C)  the formation of a complex between iodine and amylose 
D)  none of these

Question 9

Which of the following statements concerning plant cell walls is false?

Accepted Answer

A)  They are composed of a polysaccharide and protein matrix. 
B)  They contain a lipid bilayer. 
C)  They are porous to small molecules. 
D)  They contain large amounts of protein. 
A)  They are composed of a polysaccharide and protein matrix. 
B)  They contain a lipid bilayer. 
C)  They are porous to small molecules. 
D)  They contain large amounts of protein.

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 16A   Refer to Exhibit 16A.Diastereoisomers of D-Glucose include all of these,except:

Accepted Answer

A)  D-Fructose 
B)  L-Glucose 
C)  L-Idose 
D)  D-Galactose 
E)  All of these are diastereoisomers of D-Glucose. 
A)  D-Fructose 
B)  L-Glucose 
C)  L-Idose 
D)  D-Galactose 
E)  All of these are diastereoisomers of D-Glucose.

Question 12

Glycogen is sometimes called animal starch

Accepted Answer

A) True 
 B)False

Question 13

When monosaccharides are bonded together

Accepted Answer

A)  one H2O molecule is lost for each new link formed. 
B)  oligosaccharides are formed by combining a few monosaccharides. 
C)  polysaccharides are formed by combining many monosaccharides. 
D)  all of these 
A)  one H2O molecule is lost for each new link formed. 
B)  oligosaccharides are formed by combining a few monosaccharides. 
C)  polysaccharides are formed by combining many monosaccharides. 
D)  all of these

Question 14

Glycoproteins

Accepted Answer

A)  are involved in the metabolism of sugars 
B)  are proteins to which sugars are covalently bonded 
C)  occur in the bloodstream of diabetics 
D)  have not been found in nature, but have been synthesized in the laboratory 
A)  are involved in the metabolism of sugars 
B)  are proteins to which sugars are covalently bonded 
C)  occur in the bloodstream of diabetics 
D)  have not been found in nature, but have been synthesized in the laboratory

Question 15

Exhibit 16C   A polysaccharide.
Refer to Exhibit 16C.Which lettered subunit is the nonreducing end?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  There is more than one nonreducing end on this carbohydrate. 
E)  There are no nonreducing ends on this carbohydrate. 
A)  A 
B)  B 
C)  C 
D)  There is more than one nonreducing end on this carbohydrate. 
E)  There are no nonreducing ends on this carbohydrate.

Question 16

The simplest aldotriose is:

Accepted Answer

A)  acetone 
B)  dihydroxyacetone 
C)  glyceraldehyde 
D)  threose 
A)  acetone 
B)  dihydroxyacetone 
C)  glyceraldehyde 
D)  threose

Question 17

Humans are not able to digest cellulose as a food source because:

Accepted Answer

A)  Cellulose is very insoluble. 
B)  It is more important that the cellulose is used as fiber in our bodies. 
C)  We lack the enzyme to break the b linkage in the cellulose. 
D)  Cellulose is insoluble and we lack the enzyme to break the b linkage in the cellulose. 
E)  All of these are reasons why we cannot digest cellulose. 
A)  Cellulose is very insoluble. 
B)  It is more important that the cellulose is used as fiber in our bodies. 
C)  We lack the enzyme to break the b linkage in the cellulose. 
D)  Cellulose is insoluble and we lack the enzyme to break the b linkage in the cellulose. 
E)  All of these are reasons why we cannot digest cellulose.

Question 18

Chitin,which forms the exoskeletons of insects,is composed of

Accepted Answer

A)  a(1-4) linked N-acetylglucosamine residues 
B)  b(1-4) linked N-acetylglucosamine residues 
C)  a(1-4) linked glucose residues 
D)  b(1-4) linked glucose residues 
A)  a(1-4) linked N-acetylglucosamine residues 
B)  b(1-4) linked N-acetylglucosamine residues 
C)  a(1-4) linked glucose residues 
D)  b(1-4) linked glucose residues

Question 19

A pyranose is a sugar that

Accepted Answer

A)  contains a five-membered ring as part of its cyclic structure. 
B)  contains a six-membered ring as part of its cyclic structure. 
C)  is a five-carbon open-chain sugar. 
D)  is a six-carbon open-chain sugar. 
A)  contains a five-membered ring as part of its cyclic structure. 
B)  contains a six-membered ring as part of its cyclic structure. 
C)  is a five-carbon open-chain sugar. 
D)  is a six-carbon open-chain sugar.

Question 20

Which of the following is true about the ABO blood groups?

Accepted Answer

A)  all three of the blood groups have an á-L-fucose group attached 
B)  type O blood is the universal donor because it has an á-L-fucose group 
C)  type A blood has a â-N-acetylgalactosamine group 
D)  type AB blood is the universal donor 
A)  all three of the blood groups have an á-L-fucose group attached 
B)  type O blood is the universal donor because it has an á-L-fucose group 
C)  type A blood has a â-N-acetylgalactosamine group 
D)  type AB blood is the universal donor

Exam 16: Carbohydrates

Diastereomers are

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

Deoxyribose is best described as a(n):

Insoluble fiber in the diet is better at binding toxic substances than soluble fiber.

The simplest ketotriose is

The linkage between the glucose residues in amylopectin and glycogen is:

Two samples containing identical mixtures of sugars are analyzed,one using Tollen's reagent,the other with glucose oxidase.Which will give a stronger reaction?

The blue color in a well-known test for the presence of starches is due to

Which of the following statements concerning plant cell walls is false?

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

Exhibit 16A Refer to Exhibit 16A.Diastereoisomers of D-Glucose include all of these,except:

Glycogen is sometimes called animal starch

When monosaccharides are bonded together

Glycoproteins

Exhibit 16C A polysaccharide. Refer to Exhibit 16C.Which lettered subunit is the nonreducing end?

The simplest aldotriose is:

Humans are not able to digest cellulose as a food source because:

Chitin,which forms the exoskeletons of insects,is composed of

A pyranose is a sugar that

Which of the following is true about the ABO blood groups?

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of Rna

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

Photosynthesis

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

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