Question 1

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C4.

Accepted Answer

A) True 
 B)False

Question 2

Lovastatin (structure shown)was the first statin drug to be marketed and used for lowering blood cholesterol. How many chirality centers are present in lovastatin?

Accepted Answer

A) 4 
B) 7 
C) 8 
D) 9 
E) There are more than ten (10)chirality centers in lovastatin. 
A) 4 
B) 7 
C) 8 
D) 9 
E) There are more than ten (10)chirality centers in lovastatin.

Question 3

Fats and oils are structurally both triacylglycerols, but fats are solids at room temperature and oils are liquids at room temperature. Which statement best describes the reason for their difference in physical state?

Accepted Answer

A) Fats are simple triacylglycerols and oils are mixed triacylglycerols. 
B) Oils are simple triacylglycerols and fats are mixed triacylglycerols. 
C) Oils contain longer fatty acid chains than fats do, and therefore have higher melting points than fats. 
D) Fats contain a higher percentage of saturated fatty acids than oils do, and therefore have higher melting points than oils. 
A) Fats are simple triacylglycerols and oils are mixed triacylglycerols. 
B) Oils are simple triacylglycerols and fats are mixed triacylglycerols. 
C) Oils contain longer fatty acid chains than fats do, and therefore have higher melting points than fats. 
D) Fats contain a higher percentage of saturated fatty acids than oils do, and therefore have higher melting points than oils.

Question 4

Lipids known as _____ provide a protective coating for plants and animals.

Accepted Answer

The answer of Lipids known as _____ provide a protective...

Question 5

Which structural feature is not found in sphingomyelins?

Accepted Answer

A) an amide bond 
B) a glycerol backbone 
C) a phosphodiester 
D) an alcohol 
A) an amide bond 
B) a glycerol backbone 
C) a phosphodiester 
D) an alcohol

Question 6

What designation best describes linolenic acid, whose structure is shown below?

Accepted Answer

A) omega-6 acid 
B) omega-3 acid 
C) omega-9 acid 
D) omega-1 acid 
A) omega-6 acid 
B) omega-3 acid 
C) omega-9 acid 
D) omega-1 acid

Question 7

Waxes are formed from the reaction between which two types of compounds?

Accepted Answer

A) a fatty acid and an amide 
B) a high molecular weight alcohol and an ester 
C) a fatty acid and a high molecular weight alcohol 
D) an ester and a fatty acid 
A) a fatty acid and an amide 
B) a high molecular weight alcohol and an ester 
C) a fatty acid and a high molecular weight alcohol 
D) an ester and a fatty acid

Question 8

Trans double bonds can be formed when triacylglycerols are partially hydrogenated.

Accepted Answer

A) True 
 B)False

Question 9

Although biofuels are prepared from renewable resources such as vegetable oils and animal fats, they still burn to form CO2, a gas that contributes to global warming.

Accepted Answer

A) True 
 B)False

Question 10

_____ are the simplest hydrolyzable lipids.

Accepted Answer

The answer of _____ are the simplest hydrolyzable lipids....

Question 11

Tamoxifen is a widely used anti-estrogen drug used to treat tumors of the breast. Tamoxifen would be considered a hydrophilic molecule, having limited solubility in water and blood, and high solubility in fat.

Accepted Answer

A) True 
 B)False

Question 12

The compound below is a phospholipid classified as a lecithin.

Accepted Answer

A) True 
 B)False

Question 13

The compound shown below is best classified as what type of lipid?

Accepted Answer

A) a triacylglycerol 
B) a soap 
C) a fatty acid 
D) a wax 
A) a triacylglycerol 
B) a soap 
C) a fatty acid 
D) a wax

Question 14

The name of the wax formed in the reaction between palmitic acid and cetyl alcohol is _____.

Accepted Answer

The answer of The name of the wax formed in...

Question 15

The _____ is the aqueous medium inside the cell, separated from water outside the cell by the cell membrane.

Accepted Answer

The answer of The _____ is the aqueous medium inside...

Question 16

The block diagram for a phosphoacylglycerol (glycerophospholipid)is shown below. Phosphoacylglycerols can interact with both water and other lipids, and therefore are well suited for their role in the lipid bilayer of cell membranes. Which statement best explains this behavior?

Accepted Answer

A) They contain a phosphodiester. 
B) They contain both a hydrophobic region as well as a hydrophilic region. 
C) They contain both saturated fatty acids as well as unsaturated fatty acids. 
D) They contain both single bonds as well as double bonds. 
A) They contain a phosphodiester. 
B) They contain both a hydrophobic region as well as a hydrophilic region. 
C) They contain both saturated fatty acids as well as unsaturated fatty acids. 
D) They contain both single bonds as well as double bonds.

Question 17

There are _____ chirality centers in prednisone (structure shown).

Accepted Answer

The answer of There are _____ chirality centers in prednisone...

Question 18

Lipids are soluble in organic solvents and aqueous solutions.

Accepted Answer

A) True 
 B)False

Question 19

There are twenty-one (21)tetrahedral carbons in Vitamin D4 (structure shown).

Accepted Answer

A) True 
 B)False

Question 20

The molecule below is an omega-9 fatty acid.
CH3(CH2)9CH=CH(CH2)7COOH

Accepted Answer

A) True 
 B)False

Exam 19: Lipids

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C4.

Lovastatin (structure shown)was the first statin drug to be marketed and used for lowering blood cholesterol. How many chirality centers are present in lovastatin?

Fats and oils are structurally both triacylglycerols, but fats are solids at room temperature and oils are liquids at room temperature. Which statement best describes the reason for their difference in physical state?

Lipids known as _____ provide a protective coating for plants and animals.

Which structural feature is not found in sphingomyelins?

What designation best describes linolenic acid, whose structure is shown below?

Waxes are formed from the reaction between which two types of compounds?

Trans double bonds can be formed when triacylglycerols are partially hydrogenated.

Although biofuels are prepared from renewable resources such as vegetable oils and animal fats, they still burn to form CO2, a gas that contributes to global warming.

_____ are the simplest hydrolyzable lipids.

Tamoxifen is a widely used anti-estrogen drug used to treat tumors of the breast. Tamoxifen would be considered a hydrophilic molecule, having limited solubility in water and blood, and high solubility in fat.

The compound below is a phospholipid classified as a lecithin.

The compound shown below is best classified as what type of lipid?

The name of the wax formed in the reaction between palmitic acid and cetyl alcohol is _____.

The _____ is the aqueous medium inside the cell, separated from water outside the cell by the cell membrane.

The block diagram for a phosphoacylglycerol (glycerophospholipid)is shown below. Phosphoacylglycerols can interact with both water and other lipids, and therefore are well suited for their role in the lipid bilayer of cell membranes. Which statement best explains this behavior?

There are _____ chirality centers in prednisone (structure shown).

Lipids are soluble in organic solvents and aqueous solutions.

There are twenty-one (21)tetrahedral carbons in Vitamin D4 (structure shown).

The molecule below is an omega-9 fatty acid. CH3(CH2)9CH=CH(CH2)7COOH

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

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

Filters

Zileuton (Zyflo)treats the cause of asthma, not just its symptoms, by blocking the synthesis of leukotriene C₄.

Although biofuels are prepared from renewable resources such as vegetable oils and animal fats, they still burn to form CO₂, a gas that contributes to global warming.

The molecule below is an omega-9 fatty acid. CH₃(CH₂)₉CH=CH(CH₂)₇COOH