Question 1

In the disaccharide structure shown, the anomeric carbons are properly labeled.

Accepted Answer

A) True 
 B)False

Question 2

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 3

Lactose is present in milk. What type of sugar is lactose?

Accepted Answer

A) a disaccharide 
B) a monosaccharide 
C) a polysaccharide 
D) a starch 
A) a disaccharide 
B) a monosaccharide 
C) a polysaccharide 
D) a starch

Question 4

Monosaccharides are polar compounds with low melting points.

Accepted Answer

A) True 
 B)False

Question 5

Individuals who are lactose intolerant no longer produce the enzyme _____.

Accepted Answer

The answer of Individuals who are lactose intolerant no longer...

Question 6

How many acetals are present in the disaccharide shown below?

Accepted Answer

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

Question 7

What product forms when the compound below is treated with Benedict's reagent?

Accepted Answer

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

Question 8

What is the most common type of starch molecules?

Accepted Answer

A) cellulose 
B) amylose 
C) amylopectin 
D) glycogen 
A) cellulose 
B) amylose 
C) amylopectin 
D) glycogen

Question 9

$\alpha$-D-galactose and $\beta$-D-galactose are enantiomers.

Accepted Answer

A) True 
 B)False

Question 10

Which carbohydrate derivative forms a gel-like matrix in joints and the vitreous humor of the eye?

Accepted Answer

A) heparin 
B) chondroitin 
C) hyaluronate 
D) chitin 
A) heparin 
B) chondroitin 
C) hyaluronate 
D) chitin

Question 11

Which is not a glycosaminoglycan?

Accepted Answer

A) hyaluronate 
B) chitin 
C) heparin 
D) chondroitin 
A) hyaluronate 
B) chitin 
C) heparin 
D) chondroitin

Question 12

Which is not a reducing sugar?

Accepted Answer

A) glucose 
B) fructose 
C) sucrose 
D) galactose 
E) an aldopentose 
A) glucose 
B) fructose 
C) sucrose 
D) galactose 
E) an aldopentose

Question 13

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 14

The simplest aldose is commonly called glyceraldehyde, although its IUPAC name is 2, 3-dihydroxypropanal. What is the structure of this compound?

Accepted Answer

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

Question 15

What product forms when the compound below is treated with H2 in the presence of a Pd catalyst?

Accepted Answer

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

Question 16

Melibiose is a carbohydrate found in some plant juices. Which statement concerning melibiose is incorrect?

Accepted Answer

A) It is a disaccharide. 
B) It is composed of two different monosaccharides. 
C) It contains both an acetal and a hemiacetal. 
D) It contains a 1$\rightarrow$5-$\alpha$-glycosidic linkage. 
A) It is a disaccharide. 
B) It is composed of two different monosaccharides. 
C) It contains both an acetal and a hemiacetal. 
D) It contains a 1$\rightarrow$5-$\alpha$-glycosidic linkage.

Question 17

All carbohydrates, except for dihydroxyacetone, contain one or more chirality centers.

Accepted Answer

A) True 
 B)False

Question 18

The formation of what color in the Benedict's test indicates a reducing sugar is present in solution?

Accepted Answer

A) blue 
B) brick red 
C) bright yellow 
D) silver 
A) blue 
B) brick red 
C) bright yellow 
D) silver

Question 19

The monosaccharide shown below is an $\alpha$anomer.

Accepted Answer

A) True 
 B)False

Question 20

Test strips that contain the enzyme lactase are used to measure glucose concentration in urine.

Accepted Answer

A) True 
 B)False

Exam 20: Carbohydrates

In the disaccharide structure shown, the anomeric carbons are properly labeled.

What is responsible for the different blood types in humans?

Lactose is present in milk. What type of sugar is lactose?

Monosaccharides are polar compounds with low melting points.

Individuals who are lactose intolerant no longer produce the enzyme _____.

How many acetals are present in the disaccharide shown below?

What product forms when the compound below is treated with Benedict's reagent?

What is the most common type of starch molecules?

α\alphaα -D-galactose and β\betaβ -D-galactose are enantiomers.

Which carbohydrate derivative forms a gel-like matrix in joints and the vitreous humor of the eye?

Which is not a glycosaminoglycan?

Which is not a reducing sugar?

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

The simplest aldose is commonly called glyceraldehyde, although its IUPAC name is 2, 3-dihydroxypropanal. What is the structure of this compound?

What product forms when the compound below is treated with H2 in the presence of a Pd catalyst?

Melibiose is a carbohydrate found in some plant juices. Which statement concerning melibiose is incorrect?

All carbohydrates, except for dihydroxyacetone, contain one or more chirality centers.

The formation of what color in the Benedict's test indicates a reducing sugar is present in solution?

The monosaccharide shown below is an α\alphaα anomer.

Test strips that contain the enzyme lactase are used to measure glucose concentration in urine.

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

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

Filters

$\alpha$ -D-galactose and $\beta$ -D-galactose are enantiomers.

What product forms when the compound below is treated with H₂ in the presence of a Pd catalyst?

The monosaccharide shown below is an $\alpha$ anomer. $The monosaccharide shown below is an \alpha anomer.$