Question 1

Lipid membranes have how many layers?

Accepted Answer

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

Question 2

Which of the following is a common feature of many oral contraceptives?

Accepted Answer

A)  The A ring has been converted to an aromatic ring. 
B)  The D ring has been enlarged to a six-membered ring. 
C)  The ketone group in testosterone has been reduced to an alcohol. 
D)  A −C
CH unit has been attached to carbon-17 of testosterone or a testosterone derivative. 
A)  The A ring has been converted to an aromatic ring. 
B)  The D ring has been enlarged to a six-membered ring. 
C)  The ketone group in testosterone has been reduced to an alcohol. 
D)  A −C
CH unit has been attached to carbon-17 of testosterone or a testosterone derivative.

Question 3

Which of the following linkages can be found in cerebrosides?

Accepted Answer

A)  α-glucosidic 
B)  β-glucosidic 
C)  both a and b 
D)  neither a nor b 
A)  α-glucosidic 
B)  β-glucosidic 
C)  both a and b 
D)  neither a nor b

Question 4

Which of the following is not an adrenocorticoid hormone?

Accepted Answer

A)  aldosterone 
B)  cortisol 
C)  cortisone 
D)  None, they are all adrenocorticoid hormones. 
A)  aldosterone 
B)  cortisol 
C)  cortisone 
D)  None, they are all adrenocorticoid hormones.

Question 5

Which of the following alcohols could be the alcohol portion of a wax?

Accepted Answer

A)  ethylene glycol, C2H4(OH)2 
B)  glycerol, C3H5(OH)3 
C)  1-triacontanol, C30H61OH 
D)  none of these 
A)  ethylene glycol, C2H4(OH)2 
B)  glycerol, C3H5(OH)3 
C)  1-triacontanol, C30H61OH 
D)  none of these

Question 6

Cholesterol is used as which of the following?

Accepted Answer

A)  a component of plasma membranes 
B)  a starting material for the synthesis of other steroids 
C)  a starting material for the synthesis of bile salts 
D)  all of these 
A)  a component of plasma membranes 
B)  a starting material for the synthesis of other steroids 
C)  a starting material for the synthesis of bile salts 
D)  all of these

Question 7

Which of the following represents a correct sequence of steroid synthesis?

Accepted Answer

A)  cholesterol→progesterone → cortisone → cortisol 
B)  cholesterol → progesterone → cortisone → aldosterone 
C)  cholesterol → progesterone → estradiol → testosterone 
D)  none of these 
A)  cholesterol→progesterone → cortisone → cortisol 
B)  cholesterol → progesterone → cortisone → aldosterone 
C)  cholesterol → progesterone → estradiol → testosterone 
D)  none of these

Question 8

Which of the following correctly describes the function of COX-1 and COX-2?

Accepted Answer

A)  COX-1 and COX-2 are both involved in the normal physiological production of prostaglandins. 
B)  COX-1 and COX-2 both promotes production of prostaglandins in inflammation. 
C)  COX-1 promotes production of prostaglandins in inflammation, but COX-2 catalyzes normal physiological production of prostaglandins. 
D)  COX-1 catalyzes normal physiological production of prostaglandins, but COX-2 promotes production of prostaglandins in inflammation. 
A)  COX-1 and COX-2 are both involved in the normal physiological production of prostaglandins. 
B)  COX-1 and COX-2 both promotes production of prostaglandins in inflammation. 
C)  COX-1 promotes production of prostaglandins in inflammation, but COX-2 catalyzes normal physiological production of prostaglandins. 
D)  COX-1 catalyzes normal physiological production of prostaglandins, but COX-2 promotes production of prostaglandins in inflammation.

Question 9

Which of the following fatty acids is(are) likely to be found in a triglyceride?

Accepted Answer

A)  CH3(CH2)16COOH 
B)  CH3(CH2)24COOH 
C)  both a and b 
D)  neither a nor b 
A)  CH3(CH2)16COOH 
B)  CH3(CH2)24COOH 
C)  both a and b 
D)  neither a nor b

Question 10

Which of the following is true of pure fats and oils?

Accepted Answer

A)  They have color, but neither odor nor taste. 
B)  They have odor, but neither color nor taste. 
C)  They have taste, but neither odor nor color. 
D)  They are colorless, odorless and tasteless. 
A)  They have color, but neither odor nor taste. 
B)  They have odor, but neither color nor taste. 
C)  They have taste, but neither odor nor color. 
D)  They are colorless, odorless and tasteless.

Question 11

Which alcohol is a component of all triglycerides?

Accepted Answer

A)  1,2,3-butanetriol 
B)  ethylene glycol 
C)  glycerol 
D)  none of these 
A)  1,2,3-butanetriol 
B)  ethylene glycol 
C)  glycerol 
D)  none of these

Question 12

Which of the following fatty acids is(are) likely to be found in a triglyceride?

Accepted Answer

A)  CH2(CH2)15COOH 
B)  CH3(CH2)24COOH 
C)  both a and b 
D)  neither a nor b 
A)  CH2(CH2)15COOH 
B)  CH3(CH2)24COOH 
C)  both a and b 
D)  neither a nor b

Exam 21: Lipids

Lipid membranes have how many layers?

Which of the following is a common feature of many oral contraceptives?

Which of the following linkages can be found in cerebrosides?

Which of the following is not an adrenocorticoid hormone?

Which of the following alcohols could be the alcohol portion of a wax?

Cholesterol is used as which of the following?

Which of the following represents a correct sequence of steroid synthesis?

Which of the following correctly describes the function of COX-1 and COX-2?

Which of the following fatty acids is(are) likely to be found in a triglyceride?

Which of the following is true of pure fats and oils?

Which alcohol is a component of all triglycerides?

Which of the following fatty acids is(are) likely to be found in a 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

Filters