Question 1

Which class of lipoprotein carries cholesterol to peripheral tissues and helps regulate cholesterol levels in those tissues?

Accepted Answer

A) chylomicrons 
B) high density lipoproteins (HDL) 
C) low density lipoproteins (LDL) 
D) very low density lipoproteins (VLDL) 
E) sphingomyelins 
A) chylomicrons 
B) high density lipoproteins (HDL) 
C) low density lipoproteins (LDL) 
D) very low density lipoproteins (VLDL) 
E) sphingomyelins C

Question 2

Which kind of eicosanoids is thought to promote certain aspects of the inflammatory response?

Accepted Answer

A) leukotrienes 
B) prostaglandins 
C) thromboxanes 
D) steroids 
E) fatty acids 
A) leukotrienes 
B) prostaglandins 
C) thromboxanes 
D) steroids 
E) fatty acids B

Question 3

Bile salts are classified as steroids.

Accepted Answer

A) True 
 B)False  True

Question 4

What is the general term for lipids synthesized from isoprene units?

Accepted Answer

A) cholesterol 
B) waxes 
C) chylomicrons 
D) terpenes 
E) high density lipoproteins 
A) cholesterol 
B) waxes 
C) chylomicrons 
D) terpenes 
E) high density lipoproteins

Question 5

Which of the following is NOT a lipid?

Accepted Answer

A) fatty acids 
B) glycerides 
C) waxes 
D) lipoproteins 
E) All of the choices are correct. 
A) fatty acids 
B) glycerides 
C) waxes 
D) lipoproteins 
E) All of the choices are correct.

Question 6

The cell membrane controls the flow of metabolites into and out of a cell.

Accepted Answer

A) True 
 B)False

Question 7

Which class of human plasma lipoproteins binds triglycerides synthesized in the liver and carries them to adipose for storage?

Accepted Answer

A) chylomicrons 
B) high density lipoproteins (HDL) 
C) low density lipoproteins (LDL) 
D) very low density lipoproteins (VLDL) 
E) sphingomyelins 
A) chylomicrons 
B) high density lipoproteins (HDL) 
C) low density lipoproteins (LDL) 
D) very low density lipoproteins (VLDL) 
E) sphingomyelins

Question 8

Which of the following is a synthetic steroid hormone that can be taken orally for birth control?

Accepted Answer

A) norlutin 
B) albuterol 
C) testosterone 
D) stanozolol 
E) ibuprofen 
A) norlutin 
B) albuterol 
C) testosterone 
D) stanozolol 
E) ibuprofen

Question 9

Sphingomyelins are a type of sphingolipid, cell membrane lipids that contain sphingosine, an 18-carbon amino alcohol, as the backbone of the structure.What type of bond joins the fatty acid portion of the sphingomyelin molecule to the sphingosine backbone?

Accepted Answer

A) C=C bond 
B) amide bond 
C) ionic bond 
D) phosphodiester bond 
E) hydrogen bond 
A) C=C bond 
B) amide bond 
C) ionic bond 
D) phosphodiester bond 
E) hydrogen bond

Question 10

Which steroid is responsible for both the successful initiation and completion of pregnancy?

Accepted Answer

A) cholesterol 
B) sphingosine 
C) chylomicron 
D) progesterone 
E) cortisone 
A) cholesterol 
B) sphingosine 
C) chylomicron 
D) progesterone 
E) cortisone

Question 11

What is meant by the term "mixed" triglyceride?

Accepted Answer

A) It is a mixture of at least two different triglycerides. 
B) It is the term used to describe the production of triglycerides. 
C) It is a triglyceride containing different acyl groups. 
D) It is the term for the digestion of triglycerides in the body. 
E) It is a triglyceride in which all three acyl groups are identical. 
A) It is a mixture of at least two different triglycerides. 
B) It is the term used to describe the production of triglycerides. 
C) It is a triglyceride containing different acyl groups. 
D) It is the term for the digestion of triglycerides in the body. 
E) It is a triglyceride in which all three acyl groups are identical.

Question 12

Testosterone, cholesterol, and progesterone are all classified as steroids because they contain the steroid nucleus.Which of the following compounds would also be classified as a steroid?

Accepted Answer

A) I only 
B) II only 
C) III only 
D) I and II 
E) I, II, and III 
A) I only 
B) II only 
C) III only 
D) I and II 
E) I, II, and III

Question 13

What two products are formed in the reaction between a fatty acid and an alcohol?

Accepted Answer

A) ester and hydrogen 
B) ester and water 
C) ether and water 
D) ether and hydrogen 
E) hydrogen and alkane 
A) ester and hydrogen 
B) ester and water 
C) ether and water 
D) ether and hydrogen 
E) hydrogen and alkane

Question 14

What type of fatty acid is represented by the formula CnH2nCOOH?

Accepted Answer

A) saturated fatty acid 
B) unsaturated fatty acid 
C) essential fatty acid 
D) nonessential fatty acid 
E) chiral fatty acid 
A) saturated fatty acid 
B) unsaturated fatty acid 
C) essential fatty acid 
D) nonessential fatty acid 
E) chiral fatty acid

Question 15

The structure of a phosphoglyceride is shown below.Phosphoglycerides can interact with both water and other lipids, and are therefore well suited for their role in the lipid bilayer of cell membranes.Which of the following best explains this behavior?

Accepted Answer

A) Phosphoglycerides contain a phosphate diester. 
B) Phosphoglycerides contain both hydrophobic and hydrophilic regions. 
C) Phosphoglycerides contain saturated fatty acids as well as unsaturated fatty acids. 
D) Phosphoglycerides contain both single bonds and double bonds between carbons. 
E) Phosphoglycerides contain omega-3 and omega-6 fatty acids. 
A) Phosphoglycerides contain a phosphate diester. 
B) Phosphoglycerides contain both hydrophobic and hydrophilic regions. 
C) Phosphoglycerides contain saturated fatty acids as well as unsaturated fatty acids. 
D) Phosphoglycerides contain both single bonds and double bonds between carbons. 
E) Phosphoglycerides contain omega-3 and omega-6 fatty acids.

Question 16

When three fatty acids react with glycerol, a lipid known as a triglyceride is formed.How are the fatty acids bonded to glycerol?

Accepted Answer

A) by amide bonds 
B) by ester bonds 
C) by glycosidic linkages 
D) by acetal bonds 
E) by hydrogen bonding 
A) by amide bonds 
B) by ester bonds 
C) by glycosidic linkages 
D) by acetal bonds 
E) by hydrogen bonding

Question 17

Which type of lipid always contains the carbon skeleton structure shown?

Accepted Answer

A) lipoproteins 
B) glycerides 
C) phospholipids 
D) sphingolipids 
E) steroids 
A) lipoproteins 
B) glycerides 
C) phospholipids 
D) sphingolipids 
E) steroids

Question 18

The ingredients on a box of cupcakes lists partially hydrogenated soybean oil.Partial hydrogenation of soybean oil has what effect?

Accepted Answer

A) It produces fatty acid salts from the triglycerides that are present. 
B) It decreases the percentage of unsaturation present in the fatty acid side chains. 
C) It hydrolyzes the triglycerides that are present. 
D) It increases the number of fatty acids present. 
E) It converts the soybean oil to butter. 
A) It produces fatty acid salts from the triglycerides that are present. 
B) It decreases the percentage of unsaturation present in the fatty acid side chains. 
C) It hydrolyzes the triglycerides that are present. 
D) It increases the number of fatty acids present. 
E) It converts the soybean oil to butter.

Question 19

One mole of oleic acid will react with two moles of hydrogen to form a mole of stearic acid.

Accepted Answer

A) True 
 B)False

Question 20

What is another name for phosphatidylcholine?

Accepted Answer

A) phospholipid-D 
B) sphingosine 
C) cholinesterase 
D) lecithin 
E) chylomicron 
A) phospholipid-D 
B) sphingosine 
C) cholinesterase 
D) lecithin 
E) chylomicron

Exam 17: Lipids and Their Functions in Biochemical Systems

Which class of lipoprotein carries cholesterol to peripheral tissues and helps regulate cholesterol levels in those tissues?

Which kind of eicosanoids is thought to promote certain aspects of the inflammatory response?

Bile salts are classified as steroids.

What is the general term for lipids synthesized from isoprene units?

Which of the following is NOT a lipid?

The cell membrane controls the flow of metabolites into and out of a cell.

Which class of human plasma lipoproteins binds triglycerides synthesized in the liver and carries them to adipose for storage?

Which of the following is a synthetic steroid hormone that can be taken orally for birth control?

Sphingomyelins are a type of sphingolipid, cell membrane lipids that contain sphingosine, an 18-carbon amino alcohol, as the backbone of the structure.What type of bond joins the fatty acid portion of the sphingomyelin molecule to the sphingosine backbone?

Which steroid is responsible for both the successful initiation and completion of pregnancy?

What is meant by the term "mixed" triglyceride?

Testosterone, cholesterol, and progesterone are all classified as steroids because they contain the steroid nucleus.Which of the following compounds would also be classified as a steroid?

What two products are formed in the reaction between a fatty acid and an alcohol?

What type of fatty acid is represented by the formula CnH2nCOOH?

The structure of a phosphoglyceride is shown below.Phosphoglycerides can interact with both water and other lipids, and are therefore well suited for their role in the lipid bilayer of cell membranes.Which of the following best explains this behavior?

When three fatty acids react with glycerol, a lipid known as a triglyceride is formed.How are the fatty acids bonded to glycerol?

Which type of lipid always contains the carbon skeleton structure shown?

The ingredients on a box of cupcakes lists partially hydrogenated soybean oil.Partial hydrogenation of soybean oil has what effect?

One mole of oleic acid will react with two moles of hydrogen to form a mole of stearic acid.

What is another name for phosphatidylcholine?

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

Filters

What type of fatty acid is represented by the formula C_nH_2nCOOH?