Question 1

Exhibit 16C?A polysaccharide.
  
-Refer to Exhibit 16C. Which best describes the polysaccharide?

Accepted Answer

A)  homopolysaccharide 
B)  heteropolysaccharide 
C)  aminopolysaccharide 
D)  cryptopolysaccharide 
A)  homopolysaccharide 
B)  heteropolysaccharide 
C)  aminopolysaccharide 
D)  cryptopolysaccharide

Question 2

Which of the following is true about Sucralose

Accepted Answer

A)  it is an artificial sweetener 
B)  It is exactly like sucrose except for the presence of 3 chlorine atoms 
C)  It is a dissacharide made up of glucose and fructose 
D)  all of these 
A)  it is an artificial sweetener 
B)  It is exactly like sucrose except for the presence of 3 chlorine atoms 
C)  It is a dissacharide made up of glucose and fructose 
D)  all of these

Question 3

Glycogen has a similar structure to amylopectin, but is less highly branched.

Accepted Answer

A) True 
 B)False

Question 4

Exhibit 16C?A polysaccharide.
  
-Refer to Exhibit 16C. Which lettered subunit is the reducing 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 5

Sucrose 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 fructose
F) galactose and fructose 
A)  galactose only 
B)  glucose only 
C)  fructose only 
D)  galactose and glucose 
E)  glucose and fructose
F) galactose and fructose

Question 6

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 7

The simplest aldotriose is:

Accepted Answer

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

Question 8

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 two 
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 two

Question 9

There are two forms of starch:

Accepted Answer

A)  amylose and glycogen, both of which are highly branched polysaccharides 
B)  glycogen and chitin, both of which are linear polysaccharides 
C)  amylopectin and glycogen, both of which are linear polysaccharides 
D)  amylose, which is a linear polysaccharide, and amylopectin, which is highly branched 
A)  amylose and glycogen, both of which are highly branched polysaccharides 
B)  glycogen and chitin, both of which are linear polysaccharides 
C)  amylopectin and glycogen, both of which are linear polysaccharides 
D)  amylose, which is a linear polysaccharide, and amylopectin, which is highly branched

Question 10

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 11

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 12

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 13

Cartilage and mucous are both slippery because:

Accepted Answer

A)  Short polymers comprise these compounds. 
B)  The charge repulsion between the many acid groups in these polymers. 
C)  The sticky nature of sugars. 
D)  Both charge repulsion of acidic groups and the sticky nature of sugars. 
E)  All of these 
A)  Short polymers comprise these compounds. 
B)  The charge repulsion between the many acid groups in these polymers. 
C)  The sticky nature of sugars. 
D)  Both charge repulsion of acidic groups and the sticky nature of sugars. 
E)  All of these

Question 14

The following sugar is also called fruit sugar:

Accepted Answer

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

Question 15

A bacterial cell wall is composed of:

Accepted Answer

A)  A polysaccharide consisting of a single type of monosaccharide unit and cross-linking oligopeptides. 
B)  A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides. 
C)  A polysaccharide consisting of 3 types of monosaccharide units and cross-linking oligopeptides. 
D)  Two different polysaccharides and 1 type of oligopeptide, which are cross-linked. 
A)  A polysaccharide consisting of a single type of monosaccharide unit and cross-linking oligopeptides. 
B)  A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides. 
C)  A polysaccharide consisting of 3 types of monosaccharide units and cross-linking oligopeptides. 
D)  Two different polysaccharides and 1 type of oligopeptide, which are cross-linked.

Question 16

A furanose 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 17

One major difference between bacterial and plant cell walls is that bacterial cell walls have polysaccharides that are crosslinked by peptides.

Accepted Answer

A) True 
 B)False

Question 18

How many enantiomeric pairs are possible for a aldohexose?

Accepted Answer

A)  2 
B)  4 
C)  8 
D)  16 
A)  2 
B)  4 
C)  8 
D)  16

Question 19

Which of the following is not a function of carbohydrates?

Accepted Answer

A)  They are major energy sources. 
B)  They play key roles in processes that take place on the surface of cells. 
C)  They are used in structural roles. 
D)  They are catalytic components of enzymes. 
A)  They are major energy sources. 
B)  They play key roles in processes that take place on the surface of cells. 
C)  They are used in structural roles. 
D)  They are catalytic components of enzymes.

Question 20

Glycosidic linkages between monosaccharide units may vary based on

Accepted Answer

A)  the anomeric form of the cyclic structure, i.e., α or β. 
B)  which −OH group is involved. 
C)  both of these 
D)  none of these 
A)  the anomeric form of the cyclic structure, i.e., α or β. 
B)  which −OH group is involved. 
C)  both of these 
D)  none of these

Exam 16: Carbohydrates

Exhibit 16C?A polysaccharide. -Refer to Exhibit 16C. Which best describes the polysaccharide?

Which of the following is true about Sucralose

Glycogen has a similar structure to amylopectin, but is less highly branched.

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

Sucrose is composed of the following simple sugars:

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

The simplest aldotriose is:

The difference between cellobiose and maltose is:

There are two forms of starch:

Glycoproteins

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?

Cartilage and mucous are both slippery because:

The following sugar is also called fruit sugar:

A bacterial cell wall is composed of:

A furanose is a sugar that

One major difference between bacterial and plant cell walls is that bacterial cell walls have polysaccharides that are crosslinked by peptides.

How many enantiomeric pairs are possible for a aldohexose?

Which of the following is not a function of carbohydrates?

Glycosidic linkages between monosaccharide units may vary based on

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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