Question 1

In a simple model of atherosclerosis and heart disease,the compound that forms plaques that adhere to the walls of the blood vessels is ________.

Accepted Answer

A)  cholesterol
B)  carnauba wax
C)  stearic acid
D)  glycerol
E)  oleic acid

Question 2

Waxes do not contain fatty acids.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following compounds is a glycerophospholipid?

Accepted Answer

A)  jojoba wax
B)  estrogen
C)  lecithin
D)  triolein
E)  stearic acid

Question 4

Hydrogenation of a double bond in a triacylglycerol requires a catalyst.

Accepted Answer

A) True 
 B)False

Question 5

Answer the following question(s) about the diagram shown below. 
-In this diagram of a cell membrane,the objects labeled (E) are ________.

Accepted Answer

A)  steroids
B)  hydrophobic regions
C)  proteins
D)  glycerophospholipids
E)  carbohydrate side chains

Question 6

Linoleic acid is a polyunsaturated fatty acid.

Accepted Answer

A) True 
 B)False

Question 7

For the following question(s) ,identify the class of lipid to which each of the following molecules belongs.
-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)  fatty acid
D)  a steroid
E)  a prostaglandin

Question 8

Estrogens are female sex hormones.

Accepted Answer

A) True 
 B)False

Question 9

Sphingomyelin contains glycerol.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

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

Question 11

Glycerophospholipids are components of cell membranes.

Accepted Answer

A) True 
 B)False

Question 12

The components in the following glycerophospholipid are ________.

Accepted Answer

A)  sphingosine,palmitic acid,phosphate,and choline
B)  sphingosine,palmitic acid,phosphate,and serine
C)  glycerol,palmitic acid,phosphate,and ethanolamine
D)  glycerol,palmitic acid,phosphate,and galactose
E)  sphingosine,palmitic acid,phosphate,and ethanolamine

Question 13

Steroids do not contain fatty acids.

Accepted Answer

A) True 
 B)False

Question 14

Cholesterol belongs to the ________ group of lipids.

Accepted Answer

A)  glycerophospholipid
B)  steroid
C)  prostaglandin
D)  triacylglycerol
E)  wax

Question 15

Answer the following question(s) about the diagram shown below. 
-In this diagram of a cell membrane,the small branched object labeled (A) is part of a ________.

Accepted Answer

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

Question 16

A polyunsaturated fatty acid contains more than one ________.

Accepted Answer

A)  carboxyl group
B)  hydroxyl group
C)  carbonyl group
D)  long carbon chain
E)  carbon-carbon double bond

Question 17

Stearic acid is a saturated fatty acid.

Accepted Answer

A) True 
 B)False

Question 18

Unsaturated fatty acids have lower melting points than saturated fatty acids because ________.

Accepted Answer

A)  they have fewer hydrogen atoms
B)  they have more hydrogen atoms
C)  their molecules fit closely together
D)  the cis double bonds give them an irregular shape
E)  the trans double bonds give them an irregular shape

Question 19

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)  glycerophospholipids

Question 20

For the following question(s) ,identify the class of lipid to which each of the following molecules belongs.
-The type of lipid that gives a cell membrane its structure is a ________.

Accepted Answer

A)  triacylglycerol
B)  glycerophospholipid
C)  prostaglandin
D)  fatty acid
E)  wax

Exam 15: Lipids

The components in the following glycerophospholipid are ________.

Correct AnswerverifiedShow Answer

Answer the following question(s) about the diagram shown below. -In this diagram of a cell membrane,the small branched object labeled (A) is part of a ________.

Correct AnswerverifiedShow Answer

Linoleic acid is a polyunsaturated fatty acid.

Correct AnswerverifiedShow Answer

Steroids do not contain fatty acids.

Correct AnswerverifiedShow Answer

Estrogens are female sex hormones.

Correct AnswerverifiedShow Answer

Answer the following question(s) about the diagram shown below. -In this diagram of a cell membrane,the objects labeled (E) are ________.

Correct AnswerverifiedShow Answer

The products of the acid catalyzed hydrolysis of a fat are ________.

Correct AnswerverifiedShow Answer

Unsaturated fatty acids have lower melting points than saturated fatty acids because ________.

Correct AnswerverifiedShow Answer

Stearic acid is a saturated fatty acid.

Correct AnswerverifiedShow Answer

Waxes do not contain fatty acids.

Correct AnswerverifiedShow Answer

Glycerophospholipids are components of cell membranes.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In a simple model of atherosclerosis and heart disease,the compound that forms plaques that adhere to the walls of the blood vessels is ________.

Correct AnswerverifiedShow Answer

For the following question(s) ,identify the class of lipid to which each of the following molecules belongs. -The type of lipid that gives a cell membrane its structure is a ________.

Correct AnswerverifiedShow Answer

A polyunsaturated fatty acid contains more than one ________.

Correct AnswerverifiedShow Answer

For the following question(s) ,identify the class of lipid to which each of the following molecules belongs. -According to the fluid-mosaic model of a cell membrane,the main component of a membrane is ________.

Correct AnswerverifiedShow Answer

Cholesterol belongs to the ________ group of lipids.

Correct AnswerverifiedShow Answer

Which of the following compounds is a glycerophospholipid?

Correct AnswerverifiedShow Answer

Sphingomyelin contains glycerol.

Correct AnswerverifiedShow Answer

Hydrogenation of a double bond in a triacylglycerol requires a catalyst.

Correct AnswerverifiedShow Answer

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