Question 1

How many molecules of fatty acid are needed to produce one molecule of a fat or oil?

Accepted Answer

A)  1 
B)  1.5 
C)  2 
D)  3 
E)  6 
A)  1 
B)  1.5 
C)  2 
D)  3 
E)  6

Question 2

Which of the following statements correctly describe(s) the relationship between the structure of a fatty acid and its melting point?

Accepted Answer

A)  Saturated fatty acids have melting points that increase gradually with their molecular weights. 
B)  The presence of a trans double bond in the fatty acid has a greater effect on its melting point than does the presence of a cis double bond. 
C)  As the number of double bonds in a fatty acid increases, its melting point decreases. 
D)  both A and C 
E)  A, B, and C 
A)  Saturated fatty acids have melting points that increase gradually with their molecular weights. 
B)  The presence of a trans double bond in the fatty acid has a greater effect on its melting point than does the presence of a cis double bond. 
C)  As the number of double bonds in a fatty acid increases, its melting point decreases. 
D)  both A and C 
E)  A, B, and C

Question 3

How is a fat distinguished from an oil, (a) based on a physical property difference and (b) based on a difference in molecular structure?

Accepted Answer

Fats have higher melting point

Question 4

Two equivalents of isoprene are produced when limonene (shown below) is virorously heated. What single-step process has occurred?

Accepted Answer

a reverse

Question 5

Which of the following is an advantage of using an alkylbenzenesulfonate detergent over a common soap?

Accepted Answer

A)  The alkylbenzenesulfonate detergent is uncharged. 
B)  The alkylbenzenesulfonate detergent has no hydrophobic region. 
C)  Greases are not emulsified by soaps. 
D)  Calcium, magnesium, and iron salts of sulfonic acids are soluble in water. 
E)  Sulfonates are protonated at higher pH's than are carboxylates. 
A)  The alkylbenzenesulfonate detergent is uncharged. 
B)  The alkylbenzenesulfonate detergent has no hydrophobic region. 
C)  Greases are not emulsified by soaps. 
D)  Calcium, magnesium, and iron salts of sulfonic acids are soluble in water. 
E)  Sulfonates are protonated at higher pH's than are carboxylates.

Question 6

What do we call a mixture of two immiscible liquids in which one liquid is dispersed throughout the other in small droplets?

Accepted Answer

The answer of What do we call a mixture of...

Question 7

The following natural product has been examined for cytotoxic activity. How should this natural product be classified?

Accepted Answer

A)  monoterpene 
B)  sesquiterpene 
C)  diterpene 
D)  triterpene 
A)  monoterpene 
B)  sesquiterpene 
C)  diterpene 
D)  triterpene

Question 8

Which of the following terms best describes the compound below?

Accepted Answer

A)  a trans A-B steroid 
B)  a cis A-B steroid 
C)  a complex lipid 
D)  a sesquiterpene 
E)  a synthetic detergent 
A)  a trans A-B steroid 
B)  a cis A-B steroid 
C)  a complex lipid 
D)  a sesquiterpene 
E)  a synthetic detergent

Question 9

Which of the following is a lecithin?

Accepted Answer

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

Question 10

Which of the following terms correctly describe(s) the compound below?

Accepted Answer

A)  a phospholipid 
B)  a phosphoglyceride 
C)  a cephalin 
D)  a molecule which contains a polar head group 
E)  all of the above 
A)  a phospholipid 
B)  a phosphoglyceride 
C)  a cephalin 
D)  a molecule which contains a polar head group 
E)  all of the above

Question 11

Terpenes which contain two isoprene units are called ________.

Accepted Answer

A)  monoterpenes 
B)  sesquiterpenes 
C)  diterpenes 
D)  triterpenes 
E)  tetraterpenes 
A)  monoterpenes 
B)  sesquiterpenes 
C)  diterpenes 
D)  triterpenes 
E)  tetraterpenes

Question 12

Camphor is an example of a ________.

Accepted Answer

A)  terpene 
B)  triglyceride 
C)  prostaglandin 
D)  steroid 
E)  phospholipid 
A)  terpene 
B)  triglyceride 
C)  prostaglandin 
D)  steroid 
E)  phospholipid

Question 13

Name two of the three predominant groups of simple lipids.

Accepted Answer

steroids,

Question 14

Describe the intermolecular interaction of the surface carboxylate groups of a micelle and the surrounding water.

Accepted Answer

The answer of Describe the intermolecular interaction of the surface...

Question 15

Which of the following chemical reactions could be used to distinguish between a polyunsaturated vegetable oil and a petroleum oil containing a mixture of saturated and unsaturated hydrocarbons?

Accepted Answer

A)  addition of bromine in carbon tetrachloride 
B)  ozonolysis 
C)  hydrogenation 
D)  lipidification 
E)  saponification 
A)  addition of bromine in carbon tetrachloride 
B)  ozonolysis 
C)  hydrogenation 
D)  lipidification 
E)  saponification

Question 16

Describe how soaps function as cleaning agents.

Accepted Answer

Soaps aggregate in water to form cluster

Question 17

Is cholesterol an example of a simple lipid or a complex lipid? Explain briefly.

Accepted Answer

Chloesterol is a sim

Question 18

Which of the following are omega-3 fatty acids?

Accepted Answer

A)  myristic acid 
B)  oleic acid 
C)  linolenic acid 
D)  arachidonic acid 
A)  myristic acid 
B)  oleic acid 
C)  linolenic acid 
D)  arachidonic acid

Question 19

Name the compound whose formula is CH3(CH2)12CO2H.

Accepted Answer

Question 20

Describe the general molecular features which a nonionic detergent would possess.

Accepted Answer

A nonionic detergent would pos

Exam 25: Lipids

How many molecules of fatty acid are needed to produce one molecule of a fat or oil?

Which of the following statements correctly describe(s) the relationship between the structure of a fatty acid and its melting point?

How is a fat distinguished from an oil, (a) based on a physical property difference and (b) based on a difference in molecular structure?

Two equivalents of isoprene are produced when limonene (shown below) is virorously heated. What single-step process has occurred?

Which of the following is an advantage of using an alkylbenzenesulfonate detergent over a common soap?

What do we call a mixture of two immiscible liquids in which one liquid is dispersed throughout the other in small droplets?

The following natural product has been examined for cytotoxic activity. How should this natural product be classified?

Which of the following terms best describes the compound below?

Which of the following is a lecithin?

Which of the following terms correctly describe(s) the compound below?

Terpenes which contain two isoprene units are called ________.

Camphor is an example of a ________.

Name two of the three predominant groups of simple lipids.

Describe the intermolecular interaction of the surface carboxylate groups of a micelle and the surrounding water.

Which of the following chemical reactions could be used to distinguish between a polyunsaturated vegetable oil and a petroleum oil containing a mixture of saturated and unsaturated hydrocarbons?

Describe how soaps function as cleaning agents.

Is cholesterol an example of a simple lipid or a complex lipid? Explain briefly.

Which of the following are omega-3 fatty acids?

Name the compound whose formula is CH3(CH2)12CO2H.

Describe the general molecular features which a nonionic detergent would possess.

Introduction and Review

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Synthetic Polymers

Filters

Name the compound whose formula is CH₃(CH₂)₁₂CO₂H.