Question 1

What is the stereochemical relationship between your right and left hands?

Accepted Answer

A) cis- and trans- isomers 
B) structural isomers 
C) conformers 
D) enantiomers 
E) diastereomers 
A) cis- and trans- isomers 
B) structural isomers 
C) conformers 
D) enantiomers 
E) diastereomers

Question 2

What is the position of the -OH group on carbon-1 in the Haworth projection of β-D-glucose?

Accepted Answer

A) above the ring 
B) below the ring 
C) in the plane of the ring 
D) to the left of carbon-1 
E) to the right of carbon-1 
A) above the ring 
B) below the ring 
C) in the plane of the ring 
D) to the left of carbon-1 
E) to the right of carbon-1

Question 3

The Fischer projection for the naturally occurring form of fucose,one of the carbohydrates used as a cell marker in the determination of blood types,is shown below.Is this D-fucose or L-fucose?

Accepted Answer

A) D-fucose 
B) L-fucose 
C) It is neither D- nor L-; fucose is not chiral. 
D) It is impossible to determine from the Fischer projection alone. 
A) D-fucose 
B) L-fucose 
C) It is neither D- nor L-; fucose is not chiral. 
D) It is impossible to determine from the Fischer projection alone.

Question 4

If left untreated,galactosemia leads to mental retardation.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is the major storage molecule of glucose in animals?

Accepted Answer

A) cellulose 
B) sucrose 
C) blood sugar 
D) amylose 
E) glycogen 
A) cellulose 
B) sucrose 
C) blood sugar 
D) amylose 
E) glycogen

Question 6

What is the name of the simplest ketose?

Accepted Answer

A) acetone 
B) fructose 
C) ethanone 
D) 1,3-dihydroxyacetone 
E) ethose 
A) acetone 
B) fructose 
C) ethanone 
D) 1,3-dihydroxyacetone 
E) ethose

Question 7

Gentobiose,a rare disaccharide found in saffron,produces two identical monosaccharides when it undergoes hydrolysis.What is the structure of the monosaccharide hydrolysis product?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E) None of these are correct. 
A) 
  
B) 
  
C) 
  
D) 
  
E) None of these are correct.

Question 8

What type of glycosidic linkage between glucose units is present in cellulose?

Accepted Answer

A) α(1→4) 
B) β(1→4) 
C) α(1→6) 
D) β(1→6) 
E) α(1→4)and α(1→6) 
A) α(1→4) 
B) β(1→4) 
C) α(1→6) 
D) β(1→6) 
E) α(1→4)and α(1→6)

Question 9

Which enantiomer of glyceraldehyde is represented in the following structure?

Accepted Answer

A) L-glyceraldehyde 
B) α-glyceraldehyde 
C) β-glyceraldehyde 
D) D-glyceraldehyde 
E) It is impossible to determine from the structure alone. 
A) L-glyceraldehyde 
B) α-glyceraldehyde 
C) β-glyceraldehyde 
D) D-glyceraldehyde 
E) It is impossible to determine from the structure alone.

Question 10

Which of the following is NOT a carbohydrate?

Accepted Answer

A) sucrose 
B) simple sugar 
C) fatty acid 
D) cellulose 
E) starch 
A) sucrose 
B) simple sugar 
C) fatty acid 
D) cellulose 
E) starch

Question 11

Which of the following is NOT a term that would properly describe glucose as it is shown below?

Accepted Answer

A) monosaccharide 
B) aldose 
C) hemiacetal 
D) D-sugar 
E) reducing sugar 
A) monosaccharide 
B) aldose 
C) hemiacetal 
D) D-sugar 
E) reducing sugar

Question 12

What heteropolysaccharide is a component of cartilage and may relieve symptoms of osteoarthritis?

Accepted Answer

A) chondroitin sulfate 
B) hyaluronic acid 
C) heparin 
D) glycogen 
E) α-D-glucuronate 
A) chondroitin sulfate 
B) hyaluronic acid 
C) heparin 
D) glycogen 
E) α-D-glucuronate

Question 13

What are the major sites of glycogen storage in the human body?

Accepted Answer

A) fat and pancreas 
B) liver and muscle 
C) stomach and intestines 
D) kidneys and stomach 
E) heart and brain 
A) fat and pancreas 
B) liver and muscle 
C) stomach and intestines 
D) kidneys and stomach 
E) heart and brain

Question 14

Which of the following may be used as a strategy in learning biochemistry?

Accepted Answer

A) recognize that the roots in various terms are unrelated and do not follow a pattern 
B) memorize each new reaction because biological molecules react differently than organic molecules 
C) begin each chapter by memorizing the names of the enzymes along with their substrates and products 
D) focus on each detail before reviewing how they relate to an overall process 
E) understand the big concepts before mastering the details 
A) recognize that the roots in various terms are unrelated and do not follow a pattern 
B) memorize each new reaction because biological molecules react differently than organic molecules 
C) begin each chapter by memorizing the names of the enzymes along with their substrates and products 
D) focus on each detail before reviewing how they relate to an overall process 
E) understand the big concepts before mastering the details

Question 15

To what class of carbonyl-containing compounds does glucose belong?

Accepted Answer

A) aldehyde 
B) ketone 
C) alcohol 
D) amide 
E) Both aldehyde and ketone are correct. 
A) aldehyde 
B) ketone 
C) alcohol 
D) amide 
E) Both aldehyde and ketone are correct.

Question 16

Enantiomers are related as non-superimposable mirror images.

Accepted Answer

A) True 
 B)False

Question 17

Which form of D-glucose has the -OH group on carbon-1 below the ring in the Haworth projection?

Accepted Answer

A) meso 
B) L 
C) α 
D) β 
E) γ 
A) meso 
B) L 
C) α 
D) β 
E) γ

Question 18

Melibiose is a carbohydrate found in some plant juices.Which of the following statements concerning melibiose is INCORRECT?

Accepted Answer

A) It is a disaccharide. 
B) It is composed of two different monosaccharide units. 
C) It contains both an acetal and a hemiacetal. 
D) It contains an α(1→5)glycosidic linkage. 
E) It is a reducing sugar. 
A) It is a disaccharide. 
B) It is composed of two different monosaccharide units. 
C) It contains both an acetal and a hemiacetal. 
D) It contains an α(1→5)glycosidic linkage. 
E) It is a reducing sugar.

Question 19

What is the principal carbohydrate found in milk?

Accepted Answer

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

Question 20

How do the structures of amylose and cellulose differ?

Accepted Answer

A) Amylose is a linear polysaccharide and cellulose is a branched polysaccharide. 
B) Amylose is a homopolysaccharide and cellulose is a heteropolysaccharide. 
C) Amylose is a polysaccharide of glucose units,and cellulose is a polysaccharide of galactose units. 
D) Amylose is a polysaccharide made up of D-glucose units,and cellulose is a polysaccharide made up of L-glucose units. 
E) Amylose contains α(1→4)glycosidic bonds joining D-glucose units,and cellulose contains β(1→4)glycosidic bonds joining D-glucose units. 
A) Amylose is a linear polysaccharide and cellulose is a branched polysaccharide. 
B) Amylose is a homopolysaccharide and cellulose is a heteropolysaccharide. 
C) Amylose is a polysaccharide of glucose units,and cellulose is a polysaccharide of galactose units. 
D) Amylose is a polysaccharide made up of D-glucose units,and cellulose is a polysaccharide made up of L-glucose units. 
E) Amylose contains α(1→4)glycosidic bonds joining D-glucose units,and cellulose contains β(1→4)glycosidic bonds joining D-glucose units.

Exam 16: Carbohydrates

What is the stereochemical relationship between your right and left hands?

What is the position of the -OH group on carbon-1 in the Haworth projection of β-D-glucose?

The Fischer projection for the naturally occurring form of fucose,one of the carbohydrates used as a cell marker in the determination of blood types,is shown below.Is this D-fucose or L-fucose?

If left untreated,galactosemia leads to mental retardation.

Which of the following is the major storage molecule of glucose in animals?

What is the name of the simplest ketose?

Gentobiose,a rare disaccharide found in saffron,produces two identical monosaccharides when it undergoes hydrolysis.What is the structure of the monosaccharide hydrolysis product?

What type of glycosidic linkage between glucose units is present in cellulose?

Which enantiomer of glyceraldehyde is represented in the following structure?

Which of the following is NOT a carbohydrate?

Which of the following is NOT a term that would properly describe glucose as it is shown below?

What heteropolysaccharide is a component of cartilage and may relieve symptoms of osteoarthritis?

What are the major sites of glycogen storage in the human body?

Which of the following may be used as a strategy in learning biochemistry?

To what class of carbonyl-containing compounds does glucose belong?

Enantiomers are related as non-superimposable mirror images.

Which form of D-glucose has the -OH group on carbon-1 below the ring in the Haworth projection?

Melibiose is a carbohydrate found in some plant juices.Which of the following statements concerning melibiose is INCORRECT?

What is the principal carbohydrate found in milk?

How do the structures of amylose and cellulose differ?

Chemistry - Methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Solutions

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

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