Question 1

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 2

Peptidoglycan can be described as a polysaccharide that contains _____.

Accepted Answer

A)  D-galacturonic acid 
B)  coniferyl alcohol 
C)  glycosidic links 
D)  peptide crosslinks 
A)  D-galacturonic acid 
B)  coniferyl alcohol 
C)  glycosidic links 
D)  peptide crosslinks

Question 3

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 4

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 5

Cell walls

Accepted Answer

A)  occur in plants, animals, and bacteria 
B)  are found in plants and bacteria, but have different chemical compositions 
C)  have the same chemical composition in plants and bacteria 
D)  have the same chemical composition in plants and animals 
A)  occur in plants, animals, and bacteria 
B)  are found in plants and bacteria, but have different chemical compositions 
C)  have the same chemical composition in plants and bacteria 
D)  have the same chemical composition in plants and animals

Question 6

Which of the following groups is produced when an aldehyde is oxidized?

Accepted Answer

A)  ketone 
B)  carboxyl 
C)  alcohol 
D)  ether 
A)  ketone 
B)  carboxyl 
C)  alcohol 
D)  ether

Question 7

Plant starch includes amylopectin and cellulose

Accepted Answer

A) True 
 B)False

Question 8

The simplest aldotriose is:

Accepted Answer

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

Question 9

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 10

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 11

The α and β forms of the same sugar are called

Accepted Answer

A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers. 
E)  none of these 
A)  anomers. 
B)  diastereoisomers. 
C)  enantiomers. 
D)  epimers. 
E)  none of these

Question 12

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

Question 13

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 14

Which of the following is a disaccharide?

Accepted Answer

A)  sucrose 
B)  lactose 
C)  maltose 
D)  cellobiose 
E)  all of them 
A)  sucrose 
B)  lactose 
C)  maltose 
D)  cellobiose 
E)  all of them

Question 15

The conversion of a sugar's carbonyl to an alcohol is

Accepted Answer

A)  a reduction reaction. 
B)  an oxidation reaction. 
C)  a glycosidic reaction. 
D)  impossible. 
A)  a reduction reaction. 
B)  an oxidation reaction. 
C)  a glycosidic reaction. 
D)  impossible.

Question 16

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 17

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

Exam 16: Carbohydrates

There are two forms of starch:

Peptidoglycan can be described as a polysaccharide that contains _____.

A bacterial cell wall is composed of:

Which of the following disaccharides cannot be digested by mammals?

Cell walls

Which of the following groups is produced when an aldehyde is oxidized?

Plant starch includes amylopectin and cellulose

The simplest aldotriose is:

Cartilage and mucous are both slippery because:

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

The α and β forms of the same sugar are called

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

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

Which of the following is a disaccharide?

The conversion of a sugar's carbonyl to an alcohol is

Common table sugar is

Glycoproteins

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 the 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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