Question 1

Glycoproteins are components of cell membranes.

Accepted Answer

A) True 
 B)False

Question 2

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.F) A) and E)
G) C) and D)

Question 3

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 4

Sphingolipids contain fatty acids.

Accepted Answer

A) True 
 B)False

Question 5

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.F) A) and B)
G) A) and C)

Question 6

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)   cholesterolF) B) and C)
G) All of the above

Question 7

Bile salts are stored in the __________.

Accepted Answer

A)   liver
B)   pancreas
C)   stomach
D)   gall bladder
E)   small intestineF) None of the above
G) A) and E)

Question 8

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.F) A) and B)
G) All of the above

Question 9

Olestra is a triacylglycerol.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

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

Question 11

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.F) B) and E)
G) C) and E)

Question 12

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.F) A) and E)
G) A) and C)

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Choose the polyunsaturated fatty acid from the compounds below.

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) C) and E)

Question 15

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

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) C) and D)
G) A) and B)

Question 16

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

Accepted Answer

A)   wax
B)   fat
C)   phospholipid
D)   glycolipid
E)   cholesterolF) C) and D)
G) None of the above

Question 17

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)   chylomicronF) None of the above
G) A) and E)

Question 18

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)   trilinoleinF) C) and D)
G) All of the above

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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.F) A) and B)
G) C) and D)

Exam 17: Lipids

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

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Compared to saturated fatty acids, unsaturated fatty acids have

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

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

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

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Sphingolipids contain fatty acids.

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Bile salts are stored in the __________.

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

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

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

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

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Olestra is a triacylglycerol.

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The products of the acid catalyzed hydrolysis of a fat are

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

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

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

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

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

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Glycoproteins are components of cell membranes.

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Choose the polyunsaturated fatty acid from the compounds below.

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