Question 1

The following molecule is a __________.

Accepted Answer

A)  ketotriose 
B)  ketohexose 
C)  aldopentose 
D)  ketotetrose 
E)  aldohexose 
A)  ketotriose 
B)  ketohexose 
C)  aldopentose 
D)  ketotetrose 
E)  aldohexose

Question 2

The Fischer projection for fructose is shown below.Fructose is a(n)_______.

Accepted Answer

A)  ketopentose 
B)  ketohexose 
C)  aldopentose 
D)  aldotetrose 
E)  aldohexose 
A)  ketopentose 
B)  ketohexose 
C)  aldopentose 
D)  aldotetrose 
E)  aldohexose

Question 3

The figure below illustrates a(n)

Accepted Answer

A)  monosaccharide. 
B)  simple sugar. 
C)  disaccharide. 
D)  polysaccharide. 
E)  oligosaccharide. 
A)  monosaccharide. 
B)  simple sugar. 
C)  disaccharide. 
D)  polysaccharide. 
E)  oligosaccharide.

Question 4

Which statement BEST explains how mutarotation occurs in solution?

Accepted Answer

A)  Any C-C can break, opening the ring. 
B)  The hydroxyl group on the anomeric carbon "floats" between the α and the β position. 
C)  The hydroxyl group on the anomeric carbon comes off and then reattaches. 
D)  The bond between the ring oxygen and the anomeric carbon breaks, opening the ring, and then reforms, closing the ring again. 
E)  All of the above can occur in solution. 
A)  Any C-C can break, opening the ring. 
B)  The hydroxyl group on the anomeric carbon "floats" between the α and the β position. 
C)  The hydroxyl group on the anomeric carbon comes off and then reattaches. 
D)  The bond between the ring oxygen and the anomeric carbon breaks, opening the ring, and then reforms, closing the ring again. 
E)  All of the above can occur in solution.

Question 5

Which disaccharide is composed of two glucose molecules?

Accepted Answer

A)  lactose 
B)  sucrose 
C)  cellobiose 
D)  maltose 
E)  both cellobiose and maltose 
A)  lactose 
B)  sucrose 
C)  cellobiose 
D)  maltose 
E)  both cellobiose and maltose

Question 6

The structures of mannose and galactose are given below.What is the relationship between these two monosaccharides?

Accepted Answer

A)  They are identical. 
B)  They are constitutional isomers. 
C)  They are diastereomers. 
D)  They are enantiomers. 
E)  They are conformers. 
A)  They are identical. 
B)  They are constitutional isomers. 
C)  They are diastereomers. 
D)  They are enantiomers. 
E)  They are conformers.

Question 7

What is the relationship between D- and L-glucose?

Accepted Answer

A)  They are identical. 
B)  They are constitutional isomers. 
C)  They are diastereomers. 
D)  They are enantiomers. 
E)  They are conformers. 
A)  They are identical. 
B)  They are constitutional isomers. 
C)  They are diastereomers. 
D)  They are enantiomers. 
E)  They are conformers.

Question 8

Which carbon(s)in the Fischer projection below is/are tetrahedral?

Accepted Answer

A)  all carbons 
B)  carbon I only 
C)  carbon I and VI only 
D)  carbons II, III, IV, and V 
E)  carbons II through VI 
A)  all carbons 
B)  carbon I only 
C)  carbon I and VI only 
D)  carbons II, III, IV, and V 
E)  carbons II through VI

Question 9

Which statement about chiral molecules is FALSE?

Accepted Answer

A)  Monosaccharides D-glyceraldehyde and L-glyceraldehyde are enantiomers. 
B)  Chiral molecules are nonsuperimposable on their mirror image. 
C)  D-glyceraldehyde and L-glyceraldehyde can be synthesized in the laboratory. 
D)  Chiral molecules are extremely rare in the body. 
E)  D-glyceraldehyde, but not L-glyceraldehyde, is produced by our cells. 
A)  Monosaccharides D-glyceraldehyde and L-glyceraldehyde are enantiomers. 
B)  Chiral molecules are nonsuperimposable on their mirror image. 
C)  D-glyceraldehyde and L-glyceraldehyde can be synthesized in the laboratory. 
D)  Chiral molecules are extremely rare in the body. 
E)  D-glyceraldehyde, but not L-glyceraldehyde, is produced by our cells.

Question 10

Nature produces predominantly __________-carbohydrates and _______-amino acids.

Accepted Answer

A)  D, D 
B)  D, L 
C)  L, D 
D)  L, L 
E)  Nature does not favor one stereoisomer over another. 
A)  D, D 
B)  D, L 
C)  L, D 
D)  L, L 
E)  Nature does not favor one stereoisomer over another.

Question 11

Which object is chiral?

Accepted Answer

A)  a screw 
B)  a nail 
C)  a pencil 
D)  a table 
E)  a bed 
A)  a screw 
B)  a nail 
C)  a pencil 
D)  a table 
E)  a bed

Question 12

The Fischer projection for fructose is shown below.Which carbon determines whether the sugar is D- or L-?

Accepted Answer

A)  carbon A 
B)  carbon B 
C)  carbon C 
D)  carbon D 
E)  carbon E 
A)  carbon A 
B)  carbon B 
C)  carbon C 
D)  carbon D 
E)  carbon E

Question 13

What is produced by cellular respiration?

Accepted Answer

A)  oxygen 
B)  sugars 
C)  carbon dioxide, water, and energy 
D)  oxygen and energy 
E)  oxygen, sugars, and energy 
A)  oxygen 
B)  sugars 
C)  carbon dioxide, water, and energy 
D)  oxygen and energy 
E)  oxygen, sugars, and energy

Question 14

Plants store energy in the form of

Accepted Answer

A)  amylose. 
B)  amylopectin. 
C)  glycogen. 
D)  cellulose. 
E)  amylose and amylopectin. 
A)  amylose. 
B)  amylopectin. 
C)  glycogen. 
D)  cellulose. 
E)  amylose and amylopectin.

Question 15

Which arrow is pointing to a glycosidic bond?

Accepted Answer

A)  a only 
B)  b only 
C)  c only 
D)  b and c 
E)  b, c, and d 
A)  a only 
B)  b only 
C)  c only 
D)  b and c 
E)  b, c, and d

Question 16

Which of the following types of carbohydrates can be hydrolyzed to give smaller molecules? I.Monosaccharides
II)Disaccharides
III)Oligosaccharides
IV)Polysaccharides

Accepted Answer

A)  I only 
B)  II and IV only 
C)  III only 
D)  I and II only 
E)  II, III, and IV 
A)  I only 
B)  II and IV only 
C)  III only 
D)  I and II only 
E)  II, III, and IV

Question 17

Which carbon determines whether the sugar below is D- or L-?

Accepted Answer

A)  carbon A 
B)  carbon B 
C)  carbon C 
D)  carbon D 
E)  carbon E 
A)  carbon A 
B)  carbon B 
C)  carbon C 
D)  carbon D 
E)  carbon E

The following molecule is a __________.

The Fischer projection for fructose is shown below.Fructose is a(n)_______.

The figure below illustrates a(n)

Which statement BEST explains how mutarotation occurs in solution?

Which disaccharide is composed of two glucose molecules?

The structures of mannose and galactose are given below.What is the relationship between these two monosaccharides?

What is the relationship between D- and L-glucose?

Which carbon(s)in the Fischer projection below is/are tetrahedral?

Which statement about chiral molecules is FALSE?

Nature produces predominantly ____-carbohydrates and _-amino acids.

Which object is chiral?

The Fischer projection for fructose is shown below.Which carbon determines whether the sugar is D- or L-?

What is produced by cellular respiration?

Plants store energy in the form of

Which arrow is pointing to a glycosidic bond?

Which of the following types of carbohydrates can be hydrolyzed to give smaller molecules? I.Monosaccharides II)Disaccharides III)Oligosaccharides IV)Polysaccharides

Which carbon determines whether the sugar below is D- or L-?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 14: Carbohydrates: Structure and Function

The following molecule is a __________.

The Fischer projection for fructose is shown below.Fructose is a(n)_______.

The figure below illustrates a(n)

Which statement BEST explains how mutarotation occurs in solution?

Which disaccharide is composed of two glucose molecules?

The structures of mannose and galactose are given below.What is the relationship between these two monosaccharides?

What is the relationship between D- and L-glucose?

Which carbon(s)in the Fischer projection below is/are tetrahedral?

Which statement about chiral molecules is FALSE?

Nature produces predominantly __________-carbohydrates and _______-amino acids.

Which object is chiral?

The Fischer projection for fructose is shown below.Which carbon determines whether the sugar is D- or L-?

What is produced by cellular respiration?

Plants store energy in the form of

Which arrow is pointing to a glycosidic bond?

Which of the following types of carbohydrates can be hydrolyzed to give smaller molecules? I.Monosaccharides II)Disaccharides III)Oligosaccharides IV)Polysaccharides

Which carbon determines whether the sugar below is D- or L-?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Nature produces predominantly ____-carbohydrates and _-amino acids.