Question 1

Answer the question(s) that follow about the diagram shown below.  
-In this diagram of a cell membrane, the object labeled (B) is a

Accepted Answer

A)  steroid. 
B)  hydrophobic region. 
C)  membrane protein. 
D)  glycerophospholipid bilayer. 
E)  carbohydrate side chain. 
A)  steroid. 
B)  hydrophobic region. 
C)  membrane protein. 
D)  glycerophospholipid bilayer. 
E)  carbohydrate side chain.

Question 2

Answer the question(s) that follow about the diagram shown below.  
-Which of the following is a polyunsaturated fat?

Accepted Answer

A)  triolein 
B)  tripalmitin 
C)  tristearin 
D)  trimyristin 
E)  trilinolein 
A)  triolein 
B)  tripalmitin 
C)  tristearin 
D)  trimyristin 
E)  trilinolein

Question 3

The steroid hormone that increases the blood glucose and glycogen levels from fatty acids and amino acids is

Accepted Answer

A)  aldosterone. 
B)  progesterone. 
C)  cortisone. 
D)  estrogen. 
E)  prednisone. 
A)  aldosterone. 
B)  progesterone. 
C)  cortisone. 
D)  estrogen. 
E)  prednisone.

Question 4

In the fluid-mosaic model of cell membranes, the lipid molecules are oriented with their heads to the outside of the membrane.

Accepted Answer

A) True 
 B)False

Question 5

Olestra is a triacylglycerol.

Accepted Answer

A) True 
 B)False

Question 6

A triacylglycerol that is solid at room temperature is called a(n)

Accepted Answer

A)  cephalin. 
B)  lecithin. 
C)  oil. 
D)  wax. 
E)  fat. 
A)  cephalin. 
B)  lecithin. 
C)  oil. 
D)  wax. 
E)  fat.

Question 7

Which of the following is NOT a lipoprotein that carries nonpolar lipids through the bloodstream?

Accepted Answer

A)  sphingosine 
B)  LDL 
C)  HDL 
D)  VLDL 
E)  chylomicron 
A)  sphingosine 
B)  LDL 
C)  HDL 
D)  VLDL 
E)  chylomicron

Question 8

According to the fluid-mosaic model of a cell membrane, the main component of a membrane is

Accepted Answer

A)  a lipid bilayer. 
B)  a membrane protein. 
C)  a glycoprotein. 
D)  a steroid. 
E)  a prostaglandin. 
A)  a lipid bilayer. 
B)  a membrane protein. 
C)  a glycoprotein. 
D)  a steroid. 
E)  a prostaglandin.

Question 9

Which of the following fatty acids is most likely to be a liquid at room temperature?

Accepted Answer

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

Question 10

Choose the polyunsaturated fatty acid from the compounds below.

Accepted Answer

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

Question 11

Sphingolipids contain fatty acids.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following lipids will give a single molecule of fatty acid when hydrolyzed?

Accepted Answer

A)  wax 
B)  fat 
C)  phospholipid 
D)  glycolipid 
E)  cholesterol 
A)  wax 
B)  fat 
C)  phospholipid 
D)  glycolipid 
E)  cholesterol

Question 13

Glycoproteins are components of cell membranes.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following lipids will give no fatty acid when hydrolyzed?

Accepted Answer

A)  wax 
B)  fat 
C)  phospholipid 
D)  glycolipid 
E)  cholesterol 
A)  wax 
B)  fat 
C)  phospholipid 
D)  glycolipid 
E)  cholesterol

Question 15

Compared to saturated fatty acids, unsaturated fatty acids have

Accepted Answer

A)  longer carbon chains. 
B)  shorter carbon chains. 
C)  higher melting points. 
D)  lower melting points. 
E)  greater intermolecular attraction. 
A)  longer carbon chains. 
B)  shorter carbon chains. 
C)  higher melting points. 
D)  lower melting points. 
E)  greater intermolecular attraction.

Question 16

The products of the acid catalyzed hydrolysis of a fat are

Accepted Answer

A)  the esters of fatty acids. 
B)  fatty acids and glycerol. 
C)  salts of fatty acids. 
D)  salts of fatty acids and glycerol. 
E)  phospholipids. 
A)  the esters of fatty acids. 
B)  fatty acids and glycerol. 
C)  salts of fatty acids. 
D)  salts of fatty acids and glycerol. 
E)  phospholipids.

Question 17

Answer the question(s) that follow about the diagram shown below.  
-In the lipid bilayer of a cell membrane

Accepted Answer

A)  the hydrophobic heads are on the inner and outer surface and the hydrophilic tails in the middle. 
B)  the hydrophilic heads are on the inner and outer surface and the hydrophobic tails in the middle. 
C)  there is a random arrangement of phospholipids. 
D)  the hydrophilic heads are on the inner and outer surface and cholesterol is in the middle. 
E)  cholesterol is on the inner and outer surface and phospholipids are in the middle. 
A)  the hydrophobic heads are on the inner and outer surface and the hydrophilic tails in the middle. 
B)  the hydrophilic heads are on the inner and outer surface and the hydrophobic tails in the middle. 
C)  there is a random arrangement of phospholipids. 
D)  the hydrophilic heads are on the inner and outer surface and cholesterol is in the middle. 
E)  cholesterol is on the inner and outer surface and phospholipids are in the middle.

Question 18

Excess cholesterol in the blood can lead to a build up of plaque.

Accepted Answer

A) True 
 B)False

Question 19

Bile salts are stored in the __________.

Accepted Answer

A)  liver 
B)  pancreas 
C)  stomach 
D)  gall bladder 
E)  small intestine 
A)  liver 
B)  pancreas 
C)  stomach 
D)  gall bladder 
E)  small intestine

Question 20

Hydrogenation of the double bonds in unsaturated fats requires a catalyst..

Accepted Answer

A) True 
 B)False

Exam 17: Lipids

Answer the question(s) that follow about the diagram shown below. -In this diagram of a cell membrane, the object labeled (B) is a

Answer the question(s) that follow about the diagram shown below. -Which of the following is a polyunsaturated fat?

The steroid hormone that increases the blood glucose and glycogen levels from fatty acids and amino acids is

In the fluid-mosaic model of cell membranes, the lipid molecules are oriented with their heads to the outside of the membrane.

Olestra is a triacylglycerol.

A triacylglycerol that is solid at room temperature is called a(n)

Which of the following is NOT a lipoprotein that carries nonpolar lipids through the bloodstream?

According to the fluid-mosaic model of a cell membrane, the main component of a membrane is

Which of the following fatty acids is most likely to be a liquid at room temperature?

Choose the polyunsaturated fatty acid from the compounds below.

Sphingolipids contain fatty acids.

Which of the following lipids will give a single molecule of fatty acid when hydrolyzed?

Glycoproteins are components of cell membranes.

Which of the following lipids will give no fatty acid when hydrolyzed?

Compared to saturated fatty acids, unsaturated fatty acids have

The products of the acid catalyzed hydrolysis of a fat are

Answer the question(s) that follow about the diagram shown below. -In the lipid bilayer of a cell membrane

Excess cholesterol in the blood can lead to a build up of plaque.

Bile salts are stored in the __________.

Hydrogenation of the double bonds in unsaturated fats requires a catalyst..

Chemistry and Measurements

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Compounds and Their Bonds

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Introduction to Organic Chemistry: Alkanes

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