Question 1

The triacylglycerol shown below is expected to be a liquid at room temperature.

Accepted Answer

A) True 
 B)False

Question 2

There is only one polar bond in Vitamin D4 (structure shown).

Accepted Answer

A) True 
 B)False

Question 3

Which structure is the steroid skeleton?

Accepted Answer

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

Question 4

Saturated fatty acids have no double bonds in their long hydrocarbon chains.

Accepted Answer

A) True 
 B)False

Question 5

Which statement correctly describes the hydroxyl (-OH)groups found in the steroid prednisone (structure shown)?

Accepted Answer

A) There is one primary alcohol group and one secondary alcohol group. 
B) There is one secondary alcohol group and one tertiary alcohol group. 
C) There is one primary alcohol group and one tertiary alcohol group. 
D) There is one tertiary alcohol group and one carboxylic acid. 
A) There is one primary alcohol group and one secondary alcohol group. 
B) There is one secondary alcohol group and one tertiary alcohol group. 
C) There is one primary alcohol group and one tertiary alcohol group. 
D) There is one tertiary alcohol group and one carboxylic acid.

Question 6

A tube of lipstick lists capric triglyceride among its ingredients. Capric triglyceride is a simple triacylglycerol containing capric acid, a 10-carbon saturated fatty acid. Which of the structures below represents capric triglyceride?

Accepted Answer

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

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

The triacylglycerol shown below is expected to be a liquid at room temperature.

Accepted Answer

A) True 
 B)False

Question 9

An individual can survive on a completely fat-free diet.

Accepted Answer

A) True 
 B)False

Question 10

Lipids come in a wide variety of structures and have many different functions.

Accepted Answer

A) True 
 B)False

Question 11

Which statement concerning lipid functions is incorrect?

Accepted Answer

A) Steroid hormones act as messenger molecules and regulate biochemical processes. 
B) Phospholipids, glycolipids, and cholesterol provide structure for cell membranes. 
C) Triacylglycerols are used for long term energy storage. 
D) Plants and animals use waxes for insulation. 
A) Steroid hormones act as messenger molecules and regulate biochemical processes. 
B) Phospholipids, glycolipids, and cholesterol provide structure for cell membranes. 
C) Triacylglycerols are used for long term energy storage. 
D) Plants and animals use waxes for insulation.

Question 12

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 13

Hydrolysis of triacylglycerols in the body occurs with the aid of which reagent?

Accepted Answer

A) enzymes 
B) bases 
C) oxidizing agents 
D) sulfuric acid 
A) enzymes 
B) bases 
C) oxidizing agents 
D) sulfuric acid

Question 14

When phospholipids are mixed with water, they assemble in an arrangement called a lipid bilayer, with the ionic heads oriented on the inside and the nonpolar tails on the outside.

Accepted Answer

A) True 
 B)False

Question 15

The structure shown below is an example of a trans fatty acid.

Accepted Answer

A) True 
 B)False

Question 16

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH3 group.

Accepted Answer

A) True 
 B)False

Question 17

Which lipid has the lowest melting point?

Accepted Answer

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

Question 18

The structure of lipids is

Accepted Answer

A) dominated by ionic regions. 
B) dominated by hydrophilic regions. 
C) dominated by hydrophobic regions. 
D) equally dominated by hydrophilic and hydrophobic regions. 
A) dominated by ionic regions. 
B) dominated by hydrophilic regions. 
C) dominated by hydrophobic regions. 
D) equally dominated by hydrophilic and hydrophobic regions.

Question 19

Some lipids and proteins on the cell membrane surface are bonded to carbohydrates, forming glycolipids and glycoproteins.

Accepted Answer

A) True 
 B)False

Question 20

The compound below is an example of a simple triacylglycerol.

Accepted Answer

A) True 
 B)False

Exam 19: Lipids

The triacylglycerol shown below is expected to be a liquid at room temperature.

There is only one polar bond in Vitamin D4 (structure shown).

Which structure is the steroid skeleton?

Saturated fatty acids have no double bonds in their long hydrocarbon chains.

Which statement correctly describes the hydroxyl (-OH)groups found in the steroid prednisone (structure shown)?

A tube of lipstick lists capric triglyceride among its ingredients. Capric triglyceride is a simple triacylglycerol containing capric acid, a 10-carbon saturated fatty acid. Which of the structures below represents capric triglyceride?

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

The triacylglycerol shown below is expected to be a liquid at room temperature.

An individual can survive on a completely fat-free diet.

Lipids come in a wide variety of structures and have many different functions.

Which statement concerning lipid functions is incorrect?

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.

Hydrolysis of triacylglycerols in the body occurs with the aid of which reagent?

When phospholipids are mixed with water, they assemble in an arrangement called a lipid bilayer, with the ionic heads oriented on the inside and the nonpolar tails on the outside.

The structure shown below is an example of a trans fatty acid.

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH3 group.

Which lipid has the lowest melting point?

The structure of lipids is

Some lipids and proteins on the cell membrane surface are bonded to carbohydrates, forming glycolipids and glycoproteins.

The compound below is an example of a simple triacylglycerol.

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

Unsaturated fatty acids are sometimes classified as omega-n acids, where n is the carbon at which the first double bond occurs in the carbon chain, beginning at the end of the chain that contains the CH₃ group.