Question 1

Glycosidic bonds from sugars

Accepted Answer

A)  always link to the other molecule through an oxygen atom. 
B)  always link to the other molecule through a nitrogen atom. 
C)  may link to the other molecule through either an oxygen or a nitrogen atom 
A)  always link to the other molecule through an oxygen atom. 
B)  always link to the other molecule through a nitrogen atom. 
C)  may link to the other molecule through either an oxygen or a nitrogen atom

Question 2

How many carbon atoms are in the simplest carbohydrates?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 3

Which of the following has only a[1-4] linkages and no a[1-6] linkages

Accepted Answer

A)  Glycogen 
B)  Amylose 
C)  Amylopectin 
D)  Starch 
E)  Cellobiose 
A)  Glycogen 
B)  Amylose 
C)  Amylopectin 
D)  Starch 
E)  Cellobiose

Question 4

Exhibit 16B   A carbohydrate Fischer projection.
Refer to Exhibit 16B.The carbohydrate shown is

Accepted Answer

A)  a monosaccharide 
B)  a ketose. 
C)  a hexose. 
D)  all of these 
E)  none of these 
A)  a monosaccharide 
B)  a ketose. 
C)  a hexose. 
D)  all of these 
E)  none of these

Question 5

The following sugar is also called milk sugar:

Accepted Answer

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

Question 6

Common table sugar is

Accepted Answer

A)  glucose 
B)  fructose 
C)  sucrose 
D)  maltose 
E)  lactose 
A)  glucose 
B)  fructose 
C)  sucrose 
D)  maltose 
E)  lactose

Question 7

Haworth projection formulas

Accepted Answer

A)  are representations of the cyclic form of sugars 
B)  can show the distinction between the a and b anomers 
C)  both of the above 
D)  neither of the above 
A)  are representations of the cyclic form of sugars 
B)  can show the distinction between the a and b anomers 
C)  both of the above 
D)  neither of the above

Question 8

Which of the following best describes the glycosidic bond in the disaccharide shown?

Accepted Answer

A)  a(1-4) 
B)  b(1-4) 
C)  a(2-4) 
D)  b(2-4) 
E)  None of the above. 
A)  a(1-4) 
B)  b(1-4) 
C)  a(2-4) 
D)  b(2-4) 
E)  None of the above.

Question 9

See figure 16.4 in the textbook.D-erythrose is to D-ribose as D-ribose is to:

Accepted Answer

A)  D-allose 
B)  D-altrose 
C)  D-glucose 
D)  D-galactose 
A)  D-allose 
B)  D-altrose 
C)  D-glucose 
D)  D-galactose

Question 10

Which of the following disaccharides cannot be digested by mammals?

Accepted Answer

A)  cellobiose 
B)  sucrose 
C)  maltose 
D)  lactose 
A)  cellobiose 
B)  sucrose 
C)  maltose 
D)  lactose

Question 11

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. 
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.

Question 12

Which of the following monosaccharides is a ketose?

Accepted Answer

A)  glucose 
B)  fructose 
C)  galactose 
D)  mannose 
A)  glucose 
B)  fructose 
C)  galactose 
D)  mannose

Question 13

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 14

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

Question 15

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. 
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.

Question 16

Lactose 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 17

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

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 18

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 storage 
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 storage

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

Mirror image stereoisomers are called

Accepted Answer

A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers. 
A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers.

Exam 16: Carbohydrates

Glycosidic bonds from sugars

How many carbon atoms are in the simplest carbohydrates?

Which of the following has only a[1-4] linkages and no a[1-6] linkages

Exhibit 16B A carbohydrate Fischer projection. Refer to Exhibit 16B.The carbohydrate shown is

The following sugar is also called milk sugar:

Common table sugar is

Haworth projection formulas

Which of the following best describes the glycosidic bond in the disaccharide shown?

See figure 16.4 in the textbook.D-erythrose is to D-ribose as D-ribose is to:

Which of the following disaccharides cannot be digested by mammals?

Which of the following statements concerning sugar polymers is false?

Which of the following monosaccharides is a ketose?

Sucrose is composed of the following simple sugars:

Glycogen is

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

Lactose is composed of the following simple sugars:

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

Blood typing depends on

Which of the following is not a function of carbohydrates?

Mirror image stereoisomers are called

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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