Question 1

Which naturally-occurring monosaccharide forms the Haworth structure shown?

Accepted Answer

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

Question 2

The Fischer projections of two monosaccharides are shown below. Which term best describes the relationship between the two?

Accepted Answer

A) Enantiomers 
B) Anomers 
C) Constitutional isomers 
D) Diastereomers 
A) Enantiomers 
B) Anomers 
C) Constitutional isomers 
D) Diastereomers

Question 3

What is responsible for the different blood types in humans?

Accepted Answer

A) Three or four proteins attached to a membrane monosaccharide on the surface of red blood cells 
B) Three or four monosaccharides attached to a membrane protein on the surface of red blood cells 
C) Three or four amino acids attached to a membrane monosaccharide on the surface of red blood cells 
D) Three or four lipids attached to a membrane polysaccharide on the surface of red blood cells 
A) Three or four proteins attached to a membrane monosaccharide on the surface of red blood cells 
B) Three or four monosaccharides attached to a membrane protein on the surface of red blood cells 
C) Three or four amino acids attached to a membrane monosaccharide on the surface of red blood cells 
D) Three or four lipids attached to a membrane polysaccharide on the surface of red blood cells

Question 4

What monosaccharide is found in cellulose,starch,and glycogen?

Accepted Answer

A) Glucose 
B) Galactose 
C) Sucrose 
D) Fructose 
A) Glucose 
B) Galactose 
C) Sucrose 
D) Fructose

Question 5

What is the classification of the compound shown below?

Accepted Answer

A) An aldohexose 
B) A ketohexose 
C) An aldopentose 
D) A ketopentose 
A) An aldohexose 
B) A ketohexose 
C) An aldopentose 
D) A ketopentose

Question 6

Hydrolysis of the disaccharide below yields the indicated products.

Accepted Answer

A) True 
 B)False

Question 7

What is the classification of the compound shown below?

Accepted Answer

A) Aldohexose 
B) Aldopentose 
C) Ketotetrose 
D) Ketopentose 
A) Aldohexose 
B) Aldopentose 
C) Ketotetrose 
D) Ketopentose

Question 8

Individuals with type AB blood are called universal recipients because their blood contains no antibodies to blood types A,B,or O. Individuals with type AB blood can receive blood of any type.

Accepted Answer

A) True 
 B)False

Question 9

The structures of galactose (left)and glucose (right)are shown below. How are the two monosaccharides related?

Accepted Answer

A) Structural isomers 
B) Stereoisomers 
C) Enantiomers 
D) Anomers 
A) Structural isomers 
B) Stereoisomers 
C) Enantiomers 
D) Anomers

Question 10

Which structure is a three-carbon alditol?

Accepted Answer

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

Question 11

What is the classification of the compound shown below?

Accepted Answer

A) L 
B) D 
C) A sugar this small is not classified as L or D. 
A) L 
B) D 
C) A sugar this small is not classified as L or D.

Question 12

What is the structure of cellulose?

Accepted Answer

A) Unbranched skeleton of glucose molecules joined by 1→4-α-glycoside linkages 
B) Branched skeleton of glucose molecules joined by 1→4-α-glycoside linkages 
C) Unbranched skeleton of glucose molecules joined by 1→4-β-glycoside linkages 
D) Branched skeleton of glucose molecules joined by 1→4-β-glycoside linkages 
A) Unbranched skeleton of glucose molecules joined by 1→4-α-glycoside linkages 
B) Branched skeleton of glucose molecules joined by 1→4-α-glycoside linkages 
C) Unbranched skeleton of glucose molecules joined by 1→4-β-glycoside linkages 
D) Branched skeleton of glucose molecules joined by 1→4-β-glycoside linkages

Question 13

Sucrose is a disaccharide that contains one ________ unit and one ________ unit.

Accepted Answer

The answer of Sucrose is a disaccharide that contains one...

Question 14

Carbohydrates are chiral biomolecules. The term chiral indicates that carbohydrates can be both synthesized and digested by the human body.

Accepted Answer

A) True 
 B)False

Question 15

Dihydroxyacetone,shown below,is the simplest ketose. Does the structure shown represent D-dihydroxyacetone or L-dihydroxyacetone?

Accepted Answer

A) D-dihydroxyacetone 
B) L-dihydroxyacetone 
C) Neither D nor L; dihydroxyacetone is not chiral 
D) It is impossible to tell from the Fischer projection alone. 
A) D-dihydroxyacetone 
B) L-dihydroxyacetone 
C) Neither D nor L; dihydroxyacetone is not chiral 
D) It is impossible to tell from the Fischer projection alone.

Question 16

Carbohydrates are synthesized in green plants and algae through ________,a process that uses the energy from the sun to convert carbon dioxide and water into ________ and oxygen.

Accepted Answer

photosynth

Question 17

What type of polysaccharide is depicted in the "cartoon" shown below?

Accepted Answer

A) Cellulose 
B) Amylose 
C) Amylopectin 
D) Chitin 
A) Cellulose 
B) Amylose 
C) Amylopectin 
D) Chitin

Question 18

Which Haworth projection represents the banomer of the monosaccharide shown below?

Accepted Answer

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

Question 19

An α glycoside has the glycosidic linkage oriented down,below the plane of the ring that contains the acetal joining the monosaccharides.

Accepted Answer

A) True 
 B)False

Question 20

Monosaccharides with a carbonyl group at C2 are called ketoses.

Accepted Answer

A) True 
 B)False

Exam 20: Carbohydrates

Which naturally-occurring monosaccharide forms the Haworth structure shown?

The Fischer projections of two monosaccharides are shown below. Which term best describes the relationship between the two?

What is responsible for the different blood types in humans?

What monosaccharide is found in cellulose,starch,and glycogen?

What is the classification of the compound shown below?

Hydrolysis of the disaccharide below yields the indicated products.

What is the classification of the compound shown below?

Individuals with type AB blood are called universal recipients because their blood contains no antibodies to blood types A,B,or O. Individuals with type AB blood can receive blood of any type.

The structures of galactose (left)and glucose (right)are shown below. How are the two monosaccharides related?

Which structure is a three-carbon alditol?

What is the classification of the compound shown below?

What is the structure of cellulose?

Sucrose is a disaccharide that contains one ________ unit and one ________ unit.

Carbohydrates are chiral biomolecules. The term chiral indicates that carbohydrates can be both synthesized and digested by the human body.

Dihydroxyacetone,shown below,is the simplest ketose. Does the structure shown represent D-dihydroxyacetone or L-dihydroxyacetone?

Carbohydrates are synthesized in green plants and algae through ________,a process that uses the energy from the sun to convert carbon dioxide and water into ________ and oxygen.

What type of polysaccharide is depicted in the "cartoon" shown below?

Which Haworth projection represents the banomer of the monosaccharide shown below?

An α glycoside has the glycosidic linkage oriented down,below the plane of the ring that contains the acetal joining the monosaccharides.

Monosaccharides with a carbonyl group at C2 are called ketoses.

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

Sucrose is a disaccharide that contains one unit and one unit.

Carbohydrates are synthesized in green plants and algae through ,a process that uses the energy from the sun to convert carbon dioxide and water into and oxygen.