Question 1

A lecithin contains which of the following components?

Accepted Answer

A) glycerol, two fatty acids, phosphate and an amino alcohol 
B) sphingosine, two fatty acids, phosphate and an amino alcohol 
C) sphingosine, one fatty acid, phosphate and an amino alcohol 
D) glycerol and three fatty acids 
E) glycerol, two fatty acids and choline 
A) glycerol, two fatty acids, phosphate and an amino alcohol 
B) sphingosine, two fatty acids, phosphate and an amino alcohol 
C) sphingosine, one fatty acid, phosphate and an amino alcohol 
D) glycerol and three fatty acids 
E) glycerol, two fatty acids and choline

Question 2

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

Question 3

Answer the question(s)that follow about the diagram shown below.  
-In this diagram of a cell membrane, the small branched objects labeled (A)are part of a

Accepted Answer

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

Question 4

Compared to saturated fatty acids, unsaturated fatty acids have

Accepted Answer

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

Question 5

The products of the acid catalyzed hydrolysis of a fat are

Accepted Answer

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

Question 6

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

Accepted Answer

A) glycolipid. 
B) steroid. 
C) mitochondrion. 
D) hydrophobic region. 
E) phospholipid. 
A) glycolipid. 
B) steroid. 
C) mitochondrion. 
D) hydrophobic region. 
E) phospholipid.

Question 7

Choose the polyunsaturated triacylglycerol from the compounds below.

Accepted Answer

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

Question 8

Choose the satuarted triacylglycerol from the compounds below.

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

A double cheeseburger with bacon contains 640 kcal and 39 g of fat. Calculate the percentage of total kilocalories due to fat (1 gram of fat = 9 kcal).

Accepted Answer

A) 6.1% of total kilocalories 
B) 0.68% of total kilocalories 
C) 100% of total kilocalories 
D) 55% of total kilocalories 
E) 11% of total kilocalories 
A) 6.1% of total kilocalories 
B) 0.68% of total kilocalories 
C) 100% of total kilocalories 
D) 55% of total kilocalories 
E) 11% of total kilocalories

Question 11

A polyunsaturated fatty acid contains more than one

Accepted Answer

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

Question 12

Channel proteins in cell membranes serve what function?

Accepted Answer

A) They add strength and rigidity to the membrane. 
B) They provide pathways for water and electrolytes to move through cell membranes. 
C) They form the bilayer portion of the membrane. 
D) They prevent interactions between the nonpolar tails of the phospholipids which gives the membrane its fluidity. 
E) They allow nonpolar substances to move through the membrane. 
A) They add strength and rigidity to the membrane. 
B) They provide pathways for water and electrolytes to move through cell membranes. 
C) They form the bilayer portion of the membrane. 
D) They prevent interactions between the nonpolar tails of the phospholipids which gives the membrane its fluidity. 
E) They allow nonpolar substances to move through the membrane.

Question 13

Cholesterol belongs to the ________ type of lipids.

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

Bile salts are among the lipid type known as ________.

Accepted Answer

A) triacylglycerols 
B) cerebrosides 
C) sphingosides 
D) steroids 
E) prostaglandins 
A) triacylglycerols 
B) cerebrosides 
C) sphingosides 
D) steroids 
E) prostaglandins

Question 16

The structure is that of a ________.

Accepted Answer

A) steroid 
B) fatty acid 
C) triacyl glycerol 
D) glycerophospholipid 
E) wax 
A) steroid 
B) fatty acid 
C) triacyl glycerol 
D) glycerophospholipid 
E) wax

Question 17

Waxes are lipids derived from

Accepted Answer

A) terpenes and steroids. 
B) a long-chain alcohol and a long-chain fatty acid. 
C) glycerol and three fatty acids. 
D) glycerol, fatty acids, phosphate, and an amino alcohol. 
E) sphingosine, fatty acids, phosphate, and an amino alcohol. 
A) terpenes and steroids. 
B) a long-chain alcohol and a long-chain fatty acid. 
C) glycerol and three fatty acids. 
D) glycerol, fatty acids, phosphate, and an amino alcohol. 
E) sphingosine, fatty acids, phosphate, and an amino alcohol.

Question 18

Bile salts are stored in the ________.

Accepted Answer

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

Question 19

What type of lipid is the following compound?

Accepted Answer

A) prostaglandin 
B) simple lipid 
C) bile salt 
D) triacylglycerol 
E) sphingolipid 
A) prostaglandin 
B) simple lipid 
C) bile salt 
D) triacylglycerol 
E) sphingolipid

Question 20

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

Accepted Answer

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

Exam 17: Lipids

A lecithin contains which of the following components?

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

Answer the question(s)that follow about the diagram shown below. -In this diagram of a cell membrane, the small branched objects labeled (A)are part of a

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 this diagram of a cell membrane, the object labeled (C)is a

Choose the polyunsaturated triacylglycerol from the compounds below.

Choose the satuarted triacylglycerol from the compounds below.

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

A double cheeseburger with bacon contains 640 kcal and 39 g of fat. Calculate the percentage of total kilocalories due to fat (1 gram of fat = 9 kcal).

A polyunsaturated fatty acid contains more than one

Channel proteins in cell membranes serve what function?

Cholesterol belongs to the ________ type of lipids.

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

Bile salts are among the lipid type known as ________.

The structure is that of a ________.

Waxes are lipids derived from

Bile salts are stored in the ________.

What type of lipid is the following compound?

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

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