Question 1

Match the following.
-unsaturated

Accepted Answer

A) describes the non-polar portion of a molecule that does not interact with water or other polar substances 
B) describes fatty acids that have mostly single but more than one double carbon-carbon bond 
C) describes the polar portion of a molecule that interacts readily with water or other polar substances 
D) a process of transport in which substances cross a membrane based on concentration differences without the expenditure of energy 
E) describes fatty acids that have mostly single but at least one double carbon-carbon bond
F)describes fatty acids that do not have any carbon-carbon double bonds
G)a process of transport in which integral proteins change shape to allow a substance to cross a cell membrane
H)a process of transport that costs energy because the flow is against the concentration gradient 
A) describes the non-polar portion of a molecule that does not interact with water or other polar substances 
B) describes fatty acids that have mostly single but more than one double carbon-carbon bond 
C) describes the polar portion of a molecule that interacts readily with water or other polar substances 
D) a process of transport in which substances cross a membrane based on concentration differences without the expenditure of energy 
E) describes fatty acids that have mostly single but at least one double carbon-carbon bond
F)describes fatty acids that do not have any carbon-carbon double bonds
G)a process of transport in which integral proteins change shape to allow a substance to cross a cell membrane
H)a process of transport that costs energy because the flow is against the concentration gradient

Question 2

Prostaglandins

Accepted Answer

A) are produced by prostate gland and have a hormone function. 
B) are involved in the reproductive processes of the human female. 
C) are inhibited by the drug aspirin. 
D) All of these are correct statements. 
E) None of these are correct statements. 
A) are produced by prostate gland and have a hormone function. 
B) are involved in the reproductive processes of the human female. 
C) are inhibited by the drug aspirin. 
D) All of these are correct statements. 
E) None of these are correct statements.

Question 3

Which molecule is an unsaturated fatty acid?

Accepted Answer

A) lauric acid 
B) linoleic acid 
C) myristic acid 
D) butyric acid 
E) stearic acid 
A) lauric acid 
B) linoleic acid 
C) myristic acid 
D) butyric acid 
E) stearic acid

Question 4

The saponification reaction used to form soaps can be more specifically described as

Accepted Answer

A) acid hydrolysis. 
B) basic hydrolysis. 
C) hydrogenation. 
D) dehydrogenation. 
E) dehydration. 
A) acid hydrolysis. 
B) basic hydrolysis. 
C) hydrogenation. 
D) dehydrogenation. 
E) dehydration.

Question 5

The type of lipid that is predominant in cell membranes is

Accepted Answer

A) fats. 
B) phospholipids. 
C) waxes. 
D) steroids. 
E) leukotrienes. 
A) fats. 
B) phospholipids. 
C) waxes. 
D) steroids. 
E) leukotrienes.

Question 6

The function of cholesterol in a cell membrane is to

Accepted Answer

A) act as a precursor to steroid hormones. 
B) take part in the reactions that produce bile acids. 
C) maintain structure because of its flat rigid characteristics. 
D) attract hydrophobic molecules to form solid deposits. 
E) none of the above 
A) act as a precursor to steroid hormones. 
B) take part in the reactions that produce bile acids. 
C) maintain structure because of its flat rigid characteristics. 
D) attract hydrophobic molecules to form solid deposits. 
E) none of the above

Question 7

Which molecule is a fatty acid?

Accepted Answer

A) CH3COOH 
B) CH2=CHCOOH 
C) (CH3)2CH(CH2)3COOH 
D) CH3(CH2)7CH=CH(CH2)7COOH 
E) none of the above 
A) CH3COOH 
B) CH2=CHCOOH 
C) (CH3)2CH(CH2)3COOH 
D) CH3(CH2)7CH=CH(CH2)7COOH 
E) none of the above

Question 8

Compare the three mechanisms for moving materials across cell membranes.Be sure to mention gradients,energy considerations,actual method of transport,and types of materials transported in your answer.

Accepted Answer

The answer of Compare the three mechanisms for moving materials...

Question 9

The product of an esterification reaction between which of the following molecules would be a fat?
I.CH3(CH2)14COOH
II.CH3(CH2)7CH=CH(CH2)7COOH
III.HOCH2CH2OH
IV.HOCH2CH(OH)CH2OH

Accepted Answer

A) I and IV 
B) II and III 
C) II and IV 
D) I and III 
E) I and II 
A) I and IV 
B) II and III 
C) II and IV 
D) I and III 
E) I and II

Question 10

Which molecule is not a fatty acid?

Accepted Answer

A) CH3(CH2)14COOH 
B) CH3CH2(CH=CHCH2)3(CH2)6COOH 
C) (CH3)2CH(CH2)3COOH 
D) CH3(CH2)7CH=CH(CH2)7COOH 
E) none of the above 
A) CH3(CH2)14COOH 
B) CH3CH2(CH=CHCH2)3(CH2)6COOH 
C) (CH3)2CH(CH2)3COOH 
D) CH3(CH2)7CH=CH(CH2)7COOH 
E) none of the above

Question 11

Which substance will not be transported into a cell by simple diffusion?

Accepted Answer

A) CO2 
B) O2 
C) estrogen 
D) cortisone 
E) epinephrine 
A) CO2 
B) O2 
C) estrogen 
D) cortisone 
E) epinephrine

Question 12

Phospholipids differ from fats and oils by having

Accepted Answer

A) one of the fatty acid ester linkages replaced by a phosphate ester linkage. 
B) one of the fatty acid ester linkages replaced by an amine group. 
C) cyclic ester structures instead of the three-carbon backbone. 
D) a molecule of glucose bonded to the three-carbon backbone. 
E) a molecule of galactose bonded to the three-carbon backbone. 
A) one of the fatty acid ester linkages replaced by a phosphate ester linkage. 
B) one of the fatty acid ester linkages replaced by an amine group. 
C) cyclic ester structures instead of the three-carbon backbone. 
D) a molecule of glucose bonded to the three-carbon backbone. 
E) a molecule of galactose bonded to the three-carbon backbone.

Question 13

The chemical makeup of a wax is a(n)

Accepted Answer

A) simple ester of a long chain alcohol and a fatty acid. 
B) ester of glycerol with three identical saturated fatty acids. 
C) ester of glycerol with three identical unsaturated fatty acids. 
D) ester of glycerol with three predominantly saturated fatty acids. 
E) ester of glycerol with three predominantly unsaturated fatty acids. 
A) simple ester of a long chain alcohol and a fatty acid. 
B) ester of glycerol with three identical saturated fatty acids. 
C) ester of glycerol with three identical unsaturated fatty acids. 
D) ester of glycerol with three predominantly saturated fatty acids. 
E) ester of glycerol with three predominantly unsaturated fatty acids.

Question 14

Which molecule is a polyunsaturated fatty acid?

Accepted Answer

A) CH3(CH2)7CH=CH(CH2)7COOH 
B) CH2=CHCH=CHCOOH 
C) CH3CH2(CH=CHCH2)3(CH2)6COOH 
D) HOOCCH2(CH=CHCH2)3CH2COOH 
E) none of the above 
A) CH3(CH2)7CH=CH(CH2)7COOH 
B) CH2=CHCH=CHCOOH 
C) CH3CH2(CH=CHCH2)3(CH2)6COOH 
D) HOOCCH2(CH=CHCH2)3CH2COOH 
E) none of the above

Question 15

The function of glycoproteins and glycolipids in cell membranes is to

Accepted Answer

A) vary the fluidity of the membrane as needed. 
B) mediate interactions between the cell and outside agents. 
C) provide channels for facilitated diffusion. 
D) provide channels for active transport. 
E) act as energy sources for active transport. 
A) vary the fluidity of the membrane as needed. 
B) mediate interactions between the cell and outside agents. 
C) provide channels for facilitated diffusion. 
D) provide channels for active transport. 
E) act as energy sources for active transport.

Question 16

Which fatty acid composition will yield a triglyceride that will most likely be an oil?

Accepted Answer

A) 3 palmitic acid units 
B) 2 palmitic acid and 1 oleic acid units 
C) 2 linoleic acid and 1 stearic acid units 
D) 3 stearic acid units 
E) 2 palmitic acid and 1 stearic acid units 
A) 3 palmitic acid units 
B) 2 palmitic acid and 1 oleic acid units 
C) 2 linoleic acid and 1 stearic acid units 
D) 3 stearic acid units 
E) 2 palmitic acid and 1 stearic acid units

Question 17

Cholesterol is implicated as a potential cause of atherosclerosis because it

Accepted Answer

A) acts as a precursor to steroid hormones. 
B) takes part in the reactions that produce bile acids. 
C) maintains structure because of its flat rigid characteristics. 
D) attracts hydrophobic molecules to form solid deposits. 
E) none of the above 
A) acts as a precursor to steroid hormones. 
B) takes part in the reactions that produce bile acids. 
C) maintains structure because of its flat rigid characteristics. 
D) attracts hydrophobic molecules to form solid deposits. 
E) none of the above

Question 18

The molecule shown can be classified as a(an)

Accepted Answer

A) steroid. 
B) eicosanoid. 
C) wax. 
D) glycerophospholipid. 
E) sphingolipid. 
A) steroid. 
B) eicosanoid. 
C) wax. 
D) glycerophospholipid. 
E) sphingolipid.

Question 19

When a lipid is hydrolyzed to form a mixture of fatty acids,glycerol and phosphate as its products,the lipid is classified as

Accepted Answer

A) simple lipid. 
B) complex lipid. 
C) nonsaponifiable. 
D) miscellaneous. 
A) simple lipid. 
B) complex lipid. 
C) nonsaponifiable. 
D) miscellaneous.

Question 20

Match the following.
-hydrophilic

Accepted Answer

A) describes the non-polar portion of a molecule that does not interact with water or other polar substances 
B) describes fatty acids that have mostly single but more than one double carbon-carbon bond 
C) describes the polar portion of a molecule that interacts readily with water or other polar substances 
D) a process of transport in which substances cross a membrane based on concentration differences without the expenditure of energy 
E) describes fatty acids that have mostly single but at least one double carbon-carbon bond
F)describes fatty acids that do not have any carbon-carbon double bonds
G)a process of transport in which integral proteins change shape to allow a substance to cross a cell membrane
H)a process of transport that costs energy because the flow is against the concentration gradient 
A) describes the non-polar portion of a molecule that does not interact with water or other polar substances 
B) describes fatty acids that have mostly single but more than one double carbon-carbon bond 
C) describes the polar portion of a molecule that interacts readily with water or other polar substances 
D) a process of transport in which substances cross a membrane based on concentration differences without the expenditure of energy 
E) describes fatty acids that have mostly single but at least one double carbon-carbon bond
F)describes fatty acids that do not have any carbon-carbon double bonds
G)a process of transport in which integral proteins change shape to allow a substance to cross a cell membrane
H)a process of transport that costs energy because the flow is against the concentration gradient

Exam 23: Lipids

Match the following. -unsaturated

Prostaglandins

Which molecule is an unsaturated fatty acid?

The saponification reaction used to form soaps can be more specifically described as

The type of lipid that is predominant in cell membranes is

The function of cholesterol in a cell membrane is to

Which molecule is a fatty acid?

Compare the three mechanisms for moving materials across cell membranes.Be sure to mention gradients,energy considerations,actual method of transport,and types of materials transported in your answer.

The product of an esterification reaction between which of the following molecules would be a fat? I.CH3(CH2)14COOH II.CH3(CH2)7CH=CH(CH2)7COOH III.HOCH2CH2OH IV.HOCH2CH(OH)CH2OH

Which molecule is not a fatty acid?

Which substance will not be transported into a cell by simple diffusion?

Phospholipids differ from fats and oils by having

The chemical makeup of a wax is a(n)

Which molecule is a polyunsaturated fatty acid?

The function of glycoproteins and glycolipids in cell membranes is to

Which fatty acid composition will yield a triglyceride that will most likely be an oil?

Cholesterol is implicated as a potential cause of atherosclerosis because it

The molecule shown can be classified as a(an)

When a lipid is hydrolyzed to form a mixture of fatty acids,glycerol and phosphate as its products,the lipid is classified as

Match the following. -hydrophilic

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

The product of an esterification reaction between which of the following molecules would be a fat? I.CH₃(CH₂)₁₄COOH II.CH₃(CH₂)₇CH=CH(CH₂)₇COOH III.HOCH₂CH₂OH IV.HOCH₂CH(OH)CH₂OH