Question 1

Following is the structure of zingiberene, found in ginger. Identify the isoprene units in zingiberene.

Accepted Answer

The answer of Following is the structure of zingiberene, found...

Question 2

Provide the structure of a lecithin that would produce two stearic acid residues on hydrolysis?

Accepted Answer

The answer of Provide the structure of a lecithin that...

Question 3

Which of the following lipids would produce two fatty acid residues along with choline on hydrolysis?

Accepted Answer

A)  cephalins 
B)  phosphatidyl serines 
C)  triolein 
D)  lecithins 
E)  phospholipid 
A)  cephalins 
B)  phosphatidyl serines 
C)  triolein 
D)  lecithins 
E)  phospholipid

Question 4

Aspirin blocks the biosynthesis of which of the following eicosanoids?

Accepted Answer

A)  leukotrienes 
B)  prostaglandins 
C)  thromboxanes 
D)  prostacyclins 
E)  C and D 
A)  leukotrienes 
B)  prostaglandins 
C)  thromboxanes 
D)  prostacyclins 
E)  C and D

Question 5

Which one of the following fatty acids has the highest melting point?

Accepted Answer

A)  oleic acid 
B)  linoleic acid 
C)  palmitoleic acid 
D)  arachidonic acid 
E)  arachidic acid 
A)  oleic acid 
B)  linoleic acid 
C)  palmitoleic acid 
D)  arachidonic acid 
E)  arachidic acid

Question 6

Which one of the following is a precursor for the synthesis of prostaglandins?

Accepted Answer

A)  arachidonic acid 
B)  linoleic acid 
C)  cholesterol 
D)  linolenic acid 
E)  biodiesel 
A)  arachidonic acid 
B)  linoleic acid 
C)  cholesterol 
D)  linolenic acid 
E)  biodiesel

Question 7

Predict the product(s) for the following reaction.

Accepted Answer

The answer of Predict the product(s) for the following reaction....

Question 8

Sheep have ___________________ on their wool.

Accepted Answer

A)  oil 
B)  lanolin 
C)  spermaceti 
D)  carnauba wax 
E)  beeswax 
A)  oil 
B)  lanolin 
C)  spermaceti 
D)  carnauba wax 
E)  beeswax

Question 9

Draw a chair conformation for the following compound.

Accepted Answer

The answer of Draw a chair conformation for the following...

Question 10

Which of the following steroid hormones is secreted by the adrenal cortex?

Accepted Answer

A)  cortisone 
B)  androsterone 
C)  esrone 
D)  lanosterol 
E)  estradiol 
A)  cortisone 
B)  androsterone 
C)  esrone 
D)  lanosterol 
E)  estradiol

Question 11

Which of the following are the building blocks of terpenes?

Accepted Answer

A)  I and III 
B)  II and III 
C)  I and IV 
D)  II and V 
E)  II and IV 
A)  I and III 
B)  II and III 
C)  I and IV 
D)  II and V 
E)  II and IV

Question 12

Which of the following is a structure of a wax?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 13

Which of the following is not a characteristic of prostaglandins?

Accepted Answer

A)  five-membered cyclic ring 
B)  carbonyl group 
C)  two side chains 
D)  hydroxyl group 
E)  six-membered monocyclic ring 
A)  five-membered cyclic ring 
B)  carbonyl group 
C)  two side chains 
D)  hydroxyl group 
E)  six-membered monocyclic ring

Question 14

Which of the following fatty acid(s) is not likely to be present in natural fats and oils?

Accepted Answer

A)  octadecanoic acid 
B)  heptadecanoic acid 
C)  hexadecanoic acid 
D)  octadeca-9,12-dienoic acid 
E)  none of these 
A)  octadecanoic acid 
B)  heptadecanoic acid 
C)  hexadecanoic acid 
D)  octadeca-9,12-dienoic acid 
E)  none of these

Question 15

Which one of the following has the highest melting point?

Accepted Answer

A)  triolein 
B)  trilinolein 
C)  tripalmitolein 
D)  trimyrisitin 
A)  triolein 
B)  trilinolein 
C)  tripalmitolein 
D)  trimyrisitin

Question 16

Which one of the following is a class of simple lipids?

Accepted Answer

A)  steroids 
B)  triglycerides 
C)  phoshpholipids 
D)  waxes 
E)  furans 
A)  steroids 
B)  triglycerides 
C)  phoshpholipids 
D)  waxes 
E)  furans

Question 17

Complex lipids contain the _____________ functional group and are __________ in organic solvents.

Accepted Answer

A)  ester, not soluble 
B)  ketone, not soluble 
C)  alcohol, soluble 
D)  ester, soluble 
E)  ether, soluble 
A)  ester, not soluble 
B)  ketone, not soluble 
C)  alcohol, soluble 
D)  ester, soluble 
E)  ether, soluble

Question 18

Which of the following is not a class of simple lipids?

Accepted Answer

A)  phospholipids 
B)  prostaglandins 
C)  terpenes 
D)  steroids 
A)  phospholipids 
B)  prostaglandins 
C)  terpenes 
D)  steroids

Question 19

Citral is best classified as a ___________.

Accepted Answer

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

Question 20

Identify the substance that can be made from heating animal fat with wood ashes, which contain alkaline substances.

Accepted Answer

A)  detergent 
B)  soap 
C)  cooking oil 
D)  kerosene 
E)  biodiesel 
A)  detergent 
B)  soap 
C)  cooking oil 
D)  kerosene 
E)  biodiesel

Exam 26: Lipids

Following is the structure of zingiberene, found in ginger. Identify the isoprene units in zingiberene.

Provide the structure of a lecithin that would produce two stearic acid residues on hydrolysis?

Which of the following lipids would produce two fatty acid residues along with choline on hydrolysis?

Aspirin blocks the biosynthesis of which of the following eicosanoids?

Which one of the following fatty acids has the highest melting point?

Which one of the following is a precursor for the synthesis of prostaglandins?

Predict the product(s) for the following reaction.

Sheep have ___________________ on their wool.

Draw a chair conformation for the following compound.

Which of the following steroid hormones is secreted by the adrenal cortex?

Which of the following are the building blocks of terpenes?

Which of the following is a structure of a wax?

Which of the following is not a characteristic of prostaglandins?

Which of the following fatty acid(s) is not likely to be present in natural fats and oils?

Which one of the following has the highest melting point?

Which one of the following is a class of simple lipids?

Complex lipids contain the _____________ functional group and are __________ in organic solvents.

Which of the following is not a class of simple lipids?

Citral is best classified as a ___________.

Identify the substance that can be made from heating animal fat with wood ashes, which contain alkaline substances.

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Synthetic Polymers

Filters

Complex lipids contain the ___ functional group and are in organic solvents.