Question 1

Fatty acids generally contain how many carbon atoms?

Accepted Answer

A) 12 
B) 8 
C) 6 
D) an odd number 
E) an even number 
A) 12 
B) 8 
C) 6 
D) an odd number 
E) an even number

Question 2

How can the structure and composition of biological membranes be best described?

Accepted Answer

A) lipid bilayer 
B) protein micelle 
C) hydrophilic barrier 
D) emulsifying layer 
E) saturated triglyceride 
A) lipid bilayer 
B) protein micelle 
C) hydrophilic barrier 
D) emulsifying layer 
E) saturated triglyceride

Question 3

What is the product of the complete hydrogenation of linoleic acid?

Accepted Answer

A) sodium linoleate 
B) a diol 
C) arachidonic acid 
D) an ester 
E) stearic acid 
A) sodium linoleate 
B) a diol 
C) arachidonic acid 
D) an ester 
E) stearic acid

Question 4

What two fatty acids are essential fatty acids?

Accepted Answer

A) palmitoleic acid and oleic acid 
B) linoleic acid and stearic acid 
C) arachidonic acid and eicosanoids 
D) linolenic acid and linoleic acid 
E) stearic acid and oleic acid 
A) palmitoleic acid and oleic acid 
B) linoleic acid and stearic acid 
C) arachidonic acid and eicosanoids 
D) linolenic acid and linoleic acid 
E) stearic acid and oleic acid

Question 5

Which of the following best describes the composition of the carbon chain in a saturated fatty acid?

Accepted Answer

A) contains cis- and trans- C=C bonds 
B) contains only C?C bonds 
C) contains at least one C?C bond 
D) contains only C=C bonds 
E) contains alternating C?C and C=C bonds 
A) contains cis- and trans- C=C bonds 
B) contains only C?C bonds 
C) contains at least one C?C bond 
D) contains only C=C bonds 
E) contains alternating C?C and C=C bonds

Question 6

Glycolipids contain what type of compound joined to the lipid portion of the molecule?

Accepted Answer

A) protein 
B) enzyme 
C) vitamin 
D) carbohydrate 
E) amino acid 
A) protein 
B) enzyme 
C) vitamin 
D) carbohydrate 
E) amino acid

Question 7

Which of the following substances do not contribute to the structure of biological membranes?

Accepted Answer

A) phospholipids 
B) glycolipids 
C) cholesterol 
D) proteins 
E) cellulose 
A) phospholipids 
B) glycolipids 
C) cholesterol 
D) proteins 
E) cellulose

Question 8

What nitrogen-containing alcohol forms the backbone of the sphingolipids?

Accepted Answer

A) ethanolamine 
B) ammonia 
C) aniline 
D) cortisol 
E) sphingosine 
A) ethanolamine 
B) ammonia 
C) aniline 
D) cortisol 
E) sphingosine

Question 9

All lipid molecules are characterized by having a polar "head" and a nonpolar "tail."

Accepted Answer

A) True 
 B)False

Question 10

What two products are formed in the hydrolysis of a wax?

Accepted Answer

A) a long-chain alcohol and an ester 
B) a fatty acid and an ester 
C) a fatty acid and a long-chain alcohol 
D) a triglyceride and a soap 
E) an alcohol and a bile salt 
A) a long-chain alcohol and an ester 
B) a fatty acid and an ester 
C) a fatty acid and a long-chain alcohol 
D) a triglyceride and a soap 
E) an alcohol and a bile salt

Question 11

Which lipid hormones allow tissues of the body to communicate with one another?

Accepted Answer

A) steroids 
B) lipoproteins 
C) enzymes 
D) arachidonates 
E) prostaglandins 
A) steroids 
B) lipoproteins 
C) enzymes 
D) arachidonates 
E) prostaglandins

Question 12

What is the IUPAC name of the carboxylic acid formed by the hydrogenation of oleic acid (cis-9-octadecenoic acid)?

Accepted Answer

A) trans-9-octadecenoic acid 
B) octadecanoic acid 
C) octadecenoic acid 
D) 9-octadecenoic acid 
E) octadecanol 
A) trans-9-octadecenoic acid 
B) octadecanoic acid 
C) octadecenoic acid 
D) 9-octadecenoic acid 
E) octadecanol

Question 13

A strong correlation exists between heart disease and the concentration of cholesterol found in blood plasma.

Accepted Answer

A) True 
 B)False

Question 14

Fatty acids react with long chain alcohols to produce waxes.

Accepted Answer

A) True 
 B)False

Question 15

Which statement concerning lipids is FALSE?

Accepted Answer

A) Lipids are used as an energy source. 
B) Most of the energy stored in the body is in the form of lipids. 
C) Glycogen is the lipid used for storing energy. 
D) Lipids are stored in fat cells called adipocytes. 
E) Lipids release more than twice the energy of carbohydrates when oxidized. 
A) Lipids are used as an energy source. 
B) Most of the energy stored in the body is in the form of lipids. 
C) Glycogen is the lipid used for storing energy. 
D) Lipids are stored in fat cells called adipocytes. 
E) Lipids release more than twice the energy of carbohydrates when oxidized.

Question 16

What products are formed from the complete hydrolysis of a triglyceride?

Accepted Answer

A) glycerol and 3 fatty acids 
B) glycerol and 2 fatty acids 
C) glycerol and 1 fatty acid 
D) All of the choices are correct. 
E) None of the choices are correct. 
A) glycerol and 3 fatty acids 
B) glycerol and 2 fatty acids 
C) glycerol and 1 fatty acid 
D) All of the choices are correct. 
E) None of the choices are correct.

Question 17

What is the starting material for the synthesis of steroids in the body?

Accepted Answer

A) glucose 
B) testosterone 
C) stearic acid 
D) cholate 
E) cholesterol 
A) glucose 
B) testosterone 
C) stearic acid 
D) cholate 
E) cholesterol

Question 18

What is the product that results upon complete hydrogenation of the fatty acid shown?

Accepted Answer

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

Question 19

What process converts an unsaturated fatty acid into a saturated fatty acid?

Accepted Answer

A) oxidation 
B) combustion 
C) substitution 
D) hydrolysis 
E) hydrogenation 
A) oxidation 
B) combustion 
C) substitution 
D) hydrolysis 
E) hydrogenation

Question 20

High levels of one class of human plasma lipoprotein are thought to reduce the incidence of atherosclerosis.Which class is this?

Accepted Answer

A) chylomicrons 
B) VLDL 
C) LDL 
D) HDL 
E) cholinesterases 
A) chylomicrons 
B) VLDL 
C) LDL 
D) HDL 
E) cholinesterases

Exam 17: Lipids and Their Functions in Biochemical Systems

Fatty acids generally contain how many carbon atoms?

How can the structure and composition of biological membranes be best described?

What is the product of the complete hydrogenation of linoleic acid?

What two fatty acids are essential fatty acids?

Which of the following best describes the composition of the carbon chain in a saturated fatty acid?

Glycolipids contain what type of compound joined to the lipid portion of the molecule?

Which of the following substances do not contribute to the structure of biological membranes?

What nitrogen-containing alcohol forms the backbone of the sphingolipids?

All lipid molecules are characterized by having a polar "head" and a nonpolar "tail."

What two products are formed in the hydrolysis of a wax?

Which lipid hormones allow tissues of the body to communicate with one another?

What is the IUPAC name of the carboxylic acid formed by the hydrogenation of oleic acid (cis-9-octadecenoic acid)?

A strong correlation exists between heart disease and the concentration of cholesterol found in blood plasma.

Fatty acids react with long chain alcohols to produce waxes.

Which statement concerning lipids is FALSE?

What products are formed from the complete hydrolysis of a triglyceride?

What is the starting material for the synthesis of steroids in the body?

What is the product that results upon complete hydrogenation of the fatty acid shown?

What process converts an unsaturated fatty acid into a saturated fatty acid?

High levels of one class of human plasma lipoprotein are thought to reduce the incidence of atherosclerosis.Which class is this?

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Solutions

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

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