Question 1

What do we mean by an essential fatty acid?

Accepted Answer

A)  a fatty acid which the body needs so it can synthesize other fatty acids 
B)  a fatty acid which must be part of our diets since we cannot synthesize it 
C)  both a and b 
D)  neither a nor b 
A)  a fatty acid which the body needs so it can synthesize other fatty acids 
B)  a fatty acid which must be part of our diets since we cannot synthesize it 
C)  both a and b 
D)  neither a nor b B

Question 2

What is the IUPAC name of glycerol?

Accepted Answer

A)  1,2-ethanediol 
B)  1,2-propanediol 
C)  1,3-propanediol 
D)  1,2,3-propanetriol 
A)  1,2-ethanediol 
B)  1,2-propanediol 
C)  1,3-propanediol 
D)  1,2,3-propanetriol D

Question 3

Examine the following structure.   If this substance was subjected to hydrolysis in the presence of NaOH, which of the following describes the products of this reaction?

Accepted Answer

A)  1 soap and glycerol 
B)  2 different soaps and glycerol 
C)  3 different soaps and glycerol 
D)  This substance will not undergo hydrolysis in the presence of a base. 
A)  1 soap and glycerol 
B)  2 different soaps and glycerol 
C)  3 different soaps and glycerol 
D)  This substance will not undergo hydrolysis in the presence of a base. C

Question 4

Which of the following is increased by high levels of aldosterone?

Accepted Answer

A)  reabsorption of Na+ and Cl− in the kidney 
B)  reabsorption of Na+ in the kidney and release of Cl− from the kidney 
C)  release of Na+ and Cl− from the kidney 
D)  release of Na+ from the kidney and reabsorption of Cl− in the kidney 
A)  reabsorption of Na+ and Cl− in the kidney 
B)  reabsorption of Na+ in the kidney and release of Cl− from the kidney 
C)  release of Na+ and Cl− from the kidney 
D)  release of Na+ from the kidney and reabsorption of Cl− in the kidney

Question 5

How many different types of lipoproteins are associated with cholesterol transport?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 6

What is the minimum number of double bonds which must be present in a polyunsaturated fat or oil?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 7

Which of the following statements about anabolic steroids is(are) true?

Accepted Answer

A)  Olympic champions have lost their medals because of steroid testing 
B)  They are all synthetic. 
C)  They increase muscle mass. 
D)  All of the above are true. 
A)  Olympic champions have lost their medals because of steroid testing 
B)  They are all synthetic. 
C)  They increase muscle mass. 
D)  All of the above are true.

Question 8

Which of the following is associated with thromboxanes?

Accepted Answer

A)  alleviation of pain 
B)  platelet clumping 
C)  reduction of fever 
D)  all of these 
A)  alleviation of pain 
B)  platelet clumping 
C)  reduction of fever 
D)  all of these

Question 9

Which of the following is involved in the synthesis of bile salts?

Accepted Answer

A)  hydrolysis 
B)  oxidation 
C)  reduction 
D)  all of these 
A)  hydrolysis 
B)  oxidation 
C)  reduction 
D)  all of these

Question 10

Which of the following are glycolipids?

Accepted Answer

A)  ceramides 
B)  endorphins 
C)  enkephalins 
D)  none of these 
A)  ceramides 
B)  endorphins 
C)  enkephalins 
D)  none of these

Question 11

Which of the following provide a mechanism for the transport of ions and polar molecules through a membrane?

Accepted Answer

A)  active transport 
B)  specific channels 
C)  both a and b 
D)  neither a nor b 
A)  active transport 
B)  specific channels 
C)  both a and b 
D)  neither a nor b

Question 12

Which of the following triglycerides is most likely to be a fat?

Accepted Answer

A)  one which contains relatively short chain saturated fatty acids 
B)  one which contains relatively short chain unsaturated fatty acids 
C)  one which contains long chain saturated fatty acids 
D)  one which contains long chain unsaturated fatty acids 
A)  one which contains relatively short chain saturated fatty acids 
B)  one which contains relatively short chain unsaturated fatty acids 
C)  one which contains long chain saturated fatty acids 
D)  one which contains long chain unsaturated fatty acids

Question 13

Which of the following alcohols can be found in glycerophospholipids?

Accepted Answer

A)  choline 
B)  serine 
C)  inositol 
D)  all of these 
A)  choline 
B)  serine 
C)  inositol 
D)  all of these

Question 14

Which of the following structural arrangements is the steroid structure?

Accepted Answer

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

Question 15

Lipids are divided into how many structural classes?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 16

Which of the following linkages is found in glycerophospholipids?

Accepted Answer

A)  glycerol−fatty acid−phosphate 
B)  glycerol−phosphate−fatty acid 
C)  phosphate−glycerol−alcohol 
D)  none of the above 
A)  glycerol−fatty acid−phosphate 
B)  glycerol−phosphate−fatty acid 
C)  phosphate−glycerol−alcohol 
D)  none of the above

Question 17

Which of the following is the name of small intracellular structures surrounded by lipid membranes?

Accepted Answer

A)  alleles 
B)  microcells 
C)  organelles 
D)  none of these 
A)  alleles 
B)  microcells 
C)  organelles 
D)  none of these

Question 18

Which of the following statements about anabolic steroids is false?

Accepted Answer

A)  Olympic champions have lost their medals because of steroid testing. 
B)  They are all naturally occurring materials. 
C)  They cause female athletes to show male secondary sex traits. 
D)  They increase muscle mass. 
A)  Olympic champions have lost their medals because of steroid testing. 
B)  They are all naturally occurring materials. 
C)  They cause female athletes to show male secondary sex traits. 
D)  They increase muscle mass.

Question 19

Which of the following is the result of high cholesterol levels inside cells?

Accepted Answer

A)  Cholesterol synthesis in the liver ceases completely. 
B)  Cholesterol synthesis in the liver increases. 
C)  Less LDL is taken into the cells from the plasma. 
D)  More LDL is taken into the cells from the plasma. 
A)  Cholesterol synthesis in the liver ceases completely. 
B)  Cholesterol synthesis in the liver increases. 
C)  Less LDL is taken into the cells from the plasma. 
D)  More LDL is taken into the cells from the plasma.

Question 20

If a triglyceride contains linoleic, linolenic and stearic acids how many moles of hydrogen are required to fully hydrogenate one mole of this triglyceride?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

Exam 21: Lipids

What do we mean by an essential fatty acid?

What is the IUPAC name of glycerol?

Examine the following structure. If this substance was subjected to hydrolysis in the presence of NaOH, which of the following describes the products of this reaction?

Which of the following is increased by high levels of aldosterone?

How many different types of lipoproteins are associated with cholesterol transport?

What is the minimum number of double bonds which must be present in a polyunsaturated fat or oil?

Which of the following statements about anabolic steroids is(are) true?

Which of the following is associated with thromboxanes?

Which of the following is involved in the synthesis of bile salts?

Which of the following are glycolipids?

Which of the following provide a mechanism for the transport of ions and polar molecules through a membrane?

Which of the following triglycerides is most likely to be a fat?

Which of the following alcohols can be found in glycerophospholipids?

Which of the following structural arrangements is the steroid structure?

Lipids are divided into how many structural classes?

Which of the following linkages is found in glycerophospholipids?

Which of the following is the name of small intracellular structures surrounded by lipid membranes?

Which of the following statements about anabolic steroids is false?

Which of the following is the result of high cholesterol levels inside cells?

If a triglyceride contains linoleic, linolenic and stearic acids how many moles of hydrogen are required to fully hydrogenate one mole of this triglyceride?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

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