Question 1

Use the following figure to answer the questions below.
 
-Which molecule shown above is a thiol?

Accepted Answer

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

Question 2

Use the following figure to answer the questions below.
 
-Which molecule shown above contains a functional group that cells use to transfer energy between organic molecules?

Accepted Answer

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

Question 3

Use the following information to answer the questions below.
You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups.
-Organic chemistry is currently defined as

Accepted Answer

A)  the study of compounds made only by living cells.
B)  the study of carbon compounds.
C)  the study of vital forces.
D)  the study of natural (as opposed to synthetic) compounds.
E)  the study of hydrocarbons. B

Question 4

Stanley Miller's 1953 experiments assumed that early Earth's atmosphere contained

Accepted Answer

A)  hydrogen cyanide, formaldehyde, hydrogen gas, and water vapour.
B)  ammonia, methane, hydrogen gas, and water vapour.
C)  ammonia, methane, oxygen gas, and water vapour.
D)  amino acids, methane, hydrogen cyanide, and water vapour.
E)  methane, formaldehyde, ammonia, and carbon dioxide.

Question 5

Which of the following is a false statement concerning amino groups?

Accepted Answer

A)  They are basic in pH.
B)  They are found in amino acids.
C)  They contain nitrogen.
D)  They are nonpolar.
E)  They are components of urea.

Question 6

Use the following figure to answer the questions below.
 
-Which of the groups above is an acidic functional group that can dissociate and release H⁺ into a solution?

Accepted Answer

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

Question 7

The element present in all organic molecules is

Accepted Answer

A)  hydrogen.
B)  oxygen.
C)  carbon.
D)  nitrogen.
E)  phosphorus.

Question 8

Differences among organisms are caused by

Accepted Answer

A)  large differences in elemental composition from organism to organism.
B)  differences in the types and relative amounts of organic molecules synthesized by each organism.
C)  differences in the elements that bond with carbon in each organism.
D)  differences in the sizes of the organic molecules in each organism.
E)  differences in inorganic compounds present in each organism.

Question 9

Compared to a hydrocarbon chain where all the carbon atoms are linked by single bonds, a hydrocarbon chain with the same number of carbon atoms, but with one or more double bonds, will

Accepted Answer

A)  be more flexible in structure.
B)  be more constrained in structure.
C)  be more polar.
D)  have more hydrogen atoms.
E)  have fewer structurally distinct isomers.

Question 10

The complexity and variety of organic molecules is due to

Accepted Answer

A)  the chemical versatility of carbon atoms.
B)  the variety of rare elements in organic molecules.
C)  the fact that they can be synthesized only in living organisms.
D)  their interaction with water.
E)  their tremendously large sizes.

Question 11

Use the following figure to answer the questions below.
 
-Which of the groups shown above is a functional group that helps stabilize proteins by forming covalent cross-links within or between protein molecules?

Accepted Answer

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

Question 12

Three or four of the following illustrations depict different structural isomers of the organic compound with molecular formula C₆H₁₄. For clarity, only the carbon skeletons are shown; hydrogen atoms that would be attached to the carbons have been omitted. Which one, if any, is NOT a structural isomer of this compound?

Accepted Answer

A)   
B)   
C)   
D)   
E)  Each of the illustrations in the other answer choices depicts a structural isomer of the compound with molecular formula C₆H₁₄.

Question 13

A carbon atom is most likely to form what kind of bond(s) with other atoms?

Accepted Answer

A)  ionic
B)  hydrogen
C)  covalent
D)  covalent bonds and hydrogen bonds
E)  ionic bonds, covalent bonds, and hydrogen bonds

Question 14

Stanley Miller's 1953 experiments proved that

Accepted Answer

A)  life arose on Earth from simple inorganic molecules.
B)  organic molecules can be synthesized abiotically under conditions that may have existed on early Earth.
C)  life arose on Earth from simple organic molecules, with energy from lightning and volcanoes.
D)  the conditions on early Earth were conducive to the origin of life.
E)  the conditions on early Earth were conducive to the abiotic synthesis of organic molecules.

Question 15

Of the biologically important functional groups listed below, which is not reactive but serves as a tag or marker?

Accepted Answer

A)  hydroxyl
B)  carboxyl
C)  amino
D)  sulfhydryl
E)  methyl

Question 16

Use the following information to answer the questions below.
You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups.
-Which of the following hydrocarbons has a double bond in its carbon skeleton?

Accepted Answer

A)  C₃H₈
B)  C₂H₆
C)  CH₄
D)  C₂H₄
E)  C₂H₂

Question 17

Use the following figure to answer the questions below.
 
-Which of the groups shown above is a carbonyl functional group?

Accepted Answer

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

Question 18

Use the following information to answer the questions below.
You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups.
-The third molecule displays both acidic and basic properties. It most likely has

Accepted Answer

A)  at least one carboxyl group.
B)  at least one amino group.
C)  at least one hydroxyl group.
D)  both an amino and a carboxyl group.
E)  both an hydroxyl and a carboxyl group.

Question 19

Amino acids are acids because they always possess which functional group?

Accepted Answer

A)  amino
B)  carbonyl
C)  carboxyl
D)  phosphate
E)  hydroxyl

Question 20

Which pair of molecules shown below are not enantiomers of a single molecule?

Accepted Answer

A)   
B)   
C)   
D)   
E)

Exam 4: Carbon and the Molecular Diversity of Life

Use the following figure to answer the questions below. -Which molecule shown above is a thiol?

Correct Answer
verified
B

Use the following figure to answer the questions below. -Which molecule shown above contains a functional group that cells use to transfer energy between organic molecules?

Correct Answer
verified

Use the following information to answer the questions below. You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups. -Organic chemistry is currently defined as

Correct Answer
verified
B

Stanley Miller's 1953 experiments assumed that early Earth's atmosphere contained

Correct Answer
verified

Which of the following is a false statement concerning amino groups?

Correct Answer
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Use the following figure to answer the questions below. -Which of the groups above is an acidic functional group that can dissociate and release H⁺ into a solution?

Correct Answer
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The element present in all organic molecules is

Correct Answer
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Differences among organisms are caused by

Correct Answer
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Compared to a hydrocarbon chain where all the carbon atoms are linked by single bonds, a hydrocarbon chain with the same number of carbon atoms, but with one or more double bonds, will

Correct Answer
verified

The complexity and variety of organic molecules is due to

Correct Answer
verified

Use the following figure to answer the questions below. -Which of the groups shown above is a functional group that helps stabilize proteins by forming covalent cross-links within or between protein molecules?

Correct Answer
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Correct Answer
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A carbon atom is most likely to form what kind of bond(s) with other atoms?

Correct Answer
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Stanley Miller's 1953 experiments proved that

Correct Answer
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Of the biologically important functional groups listed below, which is not reactive but serves as a tag or marker?

Correct Answer
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Use the following information to answer the questions below. You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups. -Which of the following hydrocarbons has a double bond in its carbon skeleton?

Correct Answer
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Use the following figure to answer the questions below. -Which of the groups shown above is a carbonyl functional group?

Correct Answer
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B

Correct Answer
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Amino acids are acids because they always possess which functional group?

Correct Answer
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Which pair of molecules shown below are not enantiomers of a single molecule?

Correct Answer
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Exam 4: Carbon and the Molecular Diversity of Life

Use the following figure to answer the questions below. -Which molecule shown above is a thiol?

Correct AnswerverifiedB

Use the following figure to answer the questions below. -Which molecule shown above contains a functional group that cells use to transfer energy between organic molecules?

Correct AnswerverifiedShow Answer

Use the following information to answer the questions below. You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups. -Organic chemistry is currently defined as

Correct AnswerverifiedB

Stanley Miller's 1953 experiments assumed that early Earth's atmosphere contained

Correct AnswerverifiedShow Answer

Which of the following is a false statement concerning amino groups?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which of the groups above is an acidic functional group that can dissociate and release H⁺ into a solution?

Correct AnswerverifiedShow Answer

The element present in all organic molecules is

Correct AnswerverifiedShow Answer

Differences among organisms are caused by

Correct AnswerverifiedShow Answer

Compared to a hydrocarbon chain where all the carbon atoms are linked by single bonds, a hydrocarbon chain with the same number of carbon atoms, but with one or more double bonds, will

Correct AnswerverifiedShow Answer

The complexity and variety of organic molecules is due to

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which of the groups shown above is a functional group that helps stabilize proteins by forming covalent cross-links within or between protein molecules?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A carbon atom is most likely to form what kind of bond(s) with other atoms?

Correct AnswerverifiedShow Answer

Stanley Miller's 1953 experiments proved that

Correct AnswerverifiedShow Answer

Of the biologically important functional groups listed below, which is not reactive but serves as a tag or marker?

Correct AnswerverifiedShow Answer

Use the following information to answer the questions below. You are investigating the differences between three organic compounds. They all have the same carbon skeleton but have differences in their functional groups. -Which of the following hydrocarbons has a double bond in its carbon skeleton?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which of the groups shown above is a carbonyl functional group?

Correct AnswerverifiedB

Correct AnswerverifiedShow Answer

Amino acids are acids because they always possess which functional group?

Correct AnswerverifiedShow Answer

Which pair of molecules shown below are not enantiomers of a single molecule?

Correct AnswerverifiedShow Answer

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B

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B

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B

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