Question 1

Identify the isoprene units in partheniol.

Accepted Answer

The answer of Identify the isoprene units in partheniol. ...

Question 2

Which one of the following is a correct representation of PGFs?

Accepted Answer

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

Question 3

In androsterone the A-B ring fusion is ______and the B-C ring fusion is ______.

Accepted Answer

A)  cis, trans 
B)  cis, cis 
C)  trans, cis 
D)  trans, trans 
E)  both cis and trans, both cis and trans 
A)  cis, trans 
B)  cis, cis 
C)  trans, cis 
D)  trans, trans 
E)  both cis and trans, both cis and trans

Question 4

Predict the product when estradiol is treated with excess NaH followed by excess bromopropane.

Accepted Answer

The answer of Predict the product when estradiol is treated...

Question 5

How many different structures (including stereoisomers) are possible for a triglyceride that contains two palmitic acid residues and one stearic acid residue?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 6

Unsaturated triglycerides undergo autooxidation at the ___________ position of the fatty acid residue.

Accepted Answer

A)  vinylic 
B)  allylic 
C)  gamma 
D)  delta 
E)  next to carbonyl 
A)  vinylic 
B)  allylic 
C)  gamma 
D)  delta 
E)  next to carbonyl

Question 7

How many isoprene units does the following compound have?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 8

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

Accepted Answer

A)  waxes 
B)  prostaglandins 
C)  triglycerides 
D)  phospholipids 
A)  waxes 
B)  prostaglandins 
C)  triglycerides 
D)  phospholipids

Question 9

Which one of the following compounds is classified as a sesquiterpene?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  all of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  all of these

Question 10

A lipid bilayer is formed by the self assembly of _________.

Accepted Answer

A)  triglycerides 
B)  saturated fatty acids 
C)  phosphoglycerides 
D)  unsaturated fatty acids 
E)  alcohols 
A)  triglycerides 
B)  saturated fatty acids 
C)  phosphoglycerides 
D)  unsaturated fatty acids 
E)  alcohols

Question 11

Identify the substance that has a hydrophobic group and a hydrophilic group, but the ion exchange reaction does not generate a precipitate.

Accepted Answer

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

Question 12

Predict the product when testosterone is treated with PCC.

Accepted Answer

The answer of Predict the product when testosterone is treated...

Question 13

What are the ions that are typically in soap scum?

Accepted Answer

A)  sodium and potassium 
B)  lithium and potassium 
C)  hydroxide and nitrate 
D)  calcium and magnesium 
E)  silver and tin 
A)  sodium and potassium 
B)  lithium and potassium 
C)  hydroxide and nitrate 
D)  calcium and magnesium 
E)  silver and tin

Question 14

In the presence of molecular oxygen, saturated triglycerides undergo autooxidation to yield hydroperoxides.

Accepted Answer

A)  true 
B)  false 
A)  true 
B)  false

Question 15

List the components of lechithins and cephalins.

Accepted Answer

A)  three polar head groups 
B)  two polar head groups and one nonpolar hydrophobic tail 
C)  one polar head group and two nonpolar hydrophobic tails 
D)  three nonpolar hydrophobic tails 
A)  three polar head groups 
B)  two polar head groups and one nonpolar hydrophobic tail 
C)  one polar head group and two nonpolar hydrophobic tails 
D)  three nonpolar hydrophobic tails

Question 16

Which of the following is a correct numbering of the steroid nucleus?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 17

Which one of the following is a complex lipid?

Accepted Answer

A)  cortisone 
B)  vitamin A 
C)  prostaglandins 
D)  progestin 
E)  tripalmitin 
A)  cortisone 
B)  vitamin A 
C)  prostaglandins 
D)  progestin 
E)  tripalmitin

Question 18

Explain why fatty acids cannot form a bilayer.

Accepted Answer

Fatty acids have a polar head

Question 19

Which of the following is an anabolic steroid?

Accepted Answer

A)  cortisone 
B)  androsterone 
C)  esrone 
D)  nandrolone 
E)  progesterone 
A)  cortisone 
B)  androsterone 
C)  esrone 
D)  nandrolone 
E)  progesterone

Question 20

Following is the structure of capsanthin found in capsicum. Which of the following is a correct classification of capsanthin?

Accepted Answer

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

Exam 26: Lipids

Identify the isoprene units in partheniol.

Which one of the following is a correct representation of PGFs?

In androsterone the A-B ring fusion is ______and the B-C ring fusion is ______.

Predict the product when estradiol is treated with excess NaH followed by excess bromopropane.

How many different structures (including stereoisomers) are possible for a triglyceride that contains two palmitic acid residues and one stearic acid residue?

Unsaturated triglycerides undergo autooxidation at the ___________ position of the fatty acid residue.

How many isoprene units does the following compound have?

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

Which one of the following compounds is classified as a sesquiterpene?

A lipid bilayer is formed by the self assembly of _________.

Identify the substance that has a hydrophobic group and a hydrophilic group, but the ion exchange reaction does not generate a precipitate.

Predict the product when testosterone is treated with PCC.

What are the ions that are typically in soap scum?

In the presence of molecular oxygen, saturated triglycerides undergo autooxidation to yield hydroperoxides.

List the components of lechithins and cephalins.

Which of the following is a correct numbering of the steroid nucleus?

Which one of the following is a complex lipid?

Explain why fatty acids cannot form a bilayer.

Which of the following is an anabolic steroid?

Following is the structure of capsanthin found in capsicum. Which of the following is a correct classification of capsanthin?

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

In androsterone the A-B ring fusion is and the B-C ring fusion is .