Question 1

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 2

How many electron pairs does carbon share in order to complete its valence shell?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  8

Question 3

Thalidomide and L-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that

Accepted Answer

A)  have identical three-dimensional shapes.
B)  are mirror images of one another.
C)  lack an asymmetric carbon.
D)  differ in the location of their double bonds.
E)  differ in their electrical charge.

Question 4

The following questions refer to the functional groups shown in Figure 4.6.
 A. $- \mathrm { OH }$
D. $- \mathrm { NH } _ { 2 }$

B.

E. - SH
C.

-Which is an acidic functional group that can dissociate and release H+ into a solution?

Accepted Answer

The answer of The following questions refer to the functional...

Question 5

The following questions refer to the molecules shown in Figure 4.8.
 A.

B.

C.

D.

E.

-Which molecule can function as a base?

Accepted Answer

The answer of The following questions refer to the molecules...

Question 6

Figure 4.4 
-What is the name of the functional group shown in Figure 4.4?

Accepted Answer

A)  carbonyl
B)  ketone
C)  aldehyde
D)  carboxyl
E)  hydroxyl

Question 7

The following questions refer to the molecules shown in Figure 4.8.
 A.

B.

C.

D.

E.

-Which of the following hydrocarbons has a double bond in its carbon skeleton?

Accepted Answer

A)  C?H?
B)  C?H?
C)  CH?
D)  C?H?
E)  C?H?

Question 8

A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is True concerning this compound?

Accepted Answer

A)  It lacks an asymmetric carbon, and it is probably a fat or lipid.
B)  It should dissolve in water.
C)  It should dissolve in a nonpolar solvent.
D)  It won't form hydrogen bonds with water.
E)  It is hydrophobic.

Question 9

The following questions refer to the molecules shown in Figure 4.7.
 A.

B.

C.

D.

E.

-Which molecule has a carbonyl functional group in the form of an aldehyde?

Accepted Answer

The answer of The following questions refer to the molecules...

Question 10

A chemist wishes to make an organic molecule less acidic. Which of the following functional groups should be added to the molecule in order to do so?

Accepted Answer

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

Question 11

The following questions refer to the molecules shown in Figure 4.8.
 A.

B.

C.

D.

E.

-Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other?

Accepted Answer

A)  Testosterone and estradiol are structural isomers but have the same molecular formula.
B)  Testosterone and estradiol are geometric isomers but have the same molecular formula.
C)  Testosterone and estradiol have different functional groups attached to the same carbon skeleton.
D)  Testosterone and estradiol have distinctly different chemical structures, with one including four fused rings of carbon atoms, while the other has three rings.
E)  Testosterone and estradiol are enantiomers of the same organic molecule.

Question 12

Which functional group is not present in this molecule?

Accepted Answer

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

Question 13

-The two molecules shown in Figure 4.1 are best described as

Accepted Answer

A)  optical isomers.
B)  radioactive isotopes.
C)  structural isomers.
D)  nonradioactive isotopes.
E)  geometric isomers.

Question 14

The following questions refer to the molecules shown in Figure 4.7.
 A.

B.

C.

D.

E.

-Which molecule is water soluble because it has a hydroxyl functional group?

Accepted Answer

The answer of The following questions refer to the molecules...

Question 15

How many structural isomers are possible for a substance having the molecular formula C₄H₁₀?

Accepted Answer

A)  1
B)  2
C)  4
D)  3
E)  11

Question 16

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

Accepted Answer

A)  amino
B)  carbonyl
C)  carboxyl
D)  sulfhydryl
E)  aldehyde

Question 17

The following questions refer to the molecules shown in Figure 4.8.
 A.

B.

C.

D.

E.

-Which molecule functions to transfer energy between organic molecules?

Accepted Answer

The answer of The following questions refer to the molecules...

Question 18

Choose the term that correctly describes the relationship between these two sugar molecules:

Accepted Answer

A)  structural isomers
B)  geometric isomers
C)  enantiomers
D)  isotopes

Question 19

The following questions refer to the functional groups shown in Figure 4.6.
 A. $- \mathrm { OH }$
D. $- \mathrm { NH } _ { 2 }$

B.

E. - SH
C.

-Which is a carboxyl functional group?

Accepted Answer

The answer of The following questions refer to the functional...

Question 20

Why are hydrocarbons insoluble in water?

Accepted Answer

A)  The majority of their bonds are polar covalent carbon-to-hydrogen linkages.
B)  The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages.
C)  They are hydrophilic.
D)  They exhibit considerable molecular complexity and diversity.
E)  They are lighter than water.

Exam 4: Carbon and the Molecular Diversity of Life

The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which molecule can function as a base?

Correct Answer
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A chemist wishes to make an organic molecule less acidic. Which of the following functional groups should be added to the molecule in order to do so?

Correct Answer
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A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is True concerning this compound?

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

Correct Answer
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Thalidomide and L-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that

Correct Answer
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The following questions refer to the molecules shown in Figure 4.7. A. B. C. D. E. -Which molecule has a carbonyl functional group in the form of an aldehyde?

Correct Answer
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Choose the term that correctly describes the relationship between these two sugar molecules:

Correct Answer
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Which of the following is a False statement concerning amino groups?

Correct Answer
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Figure 4.4 -What is the name of the functional group shown in Figure 4.4?

Correct Answer
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Why are hydrocarbons insoluble in water?

Correct Answer
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The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which of the following hydrocarbons has a double bond in its carbon skeleton?

Correct Answer
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The following questions refer to the molecules shown in Figure 4.7. A. B. C. D. E. -Which molecule is water soluble because it has a hydroxyl functional group?

Correct Answer
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-The two molecules shown in Figure 4.1 are best described as

Correct Answer
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The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which molecule functions to transfer energy between organic molecules?

Correct Answer
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How many structural isomers are possible for a substance having the molecular formula C₄H₁₀?

Correct Answer
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How many electron pairs does carbon share in order to complete its valence shell?

Correct Answer
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Which functional group is not present in this molecule?

Correct Answer
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The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other?

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

The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which molecule can function as a base?

Correct AnswerverifiedShow Answer

The following questions refer to the functional groups shown in Figure 4.6. A. −OH- \mathrm { OH }−OH D. −NH2- \mathrm { NH } _ { 2 }−NH2​ B. E. - SH C. -Which is an acidic functional group that can dissociate and release H+ into a solution?

Correct AnswerverifiedShow Answer

The following questions refer to the functional groups shown in Figure 4.6. A. −OH- \mathrm { OH }−OH D. −NH2- \mathrm { NH } _ { 2 }−NH2​ B. E. - SH C. -Which is a carboxyl functional group?

Correct AnswerverifiedShow Answer

A chemist wishes to make an organic molecule less acidic. Which of the following functional groups should be added to the molecule in order to do so?

Correct AnswerverifiedShow Answer

A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is True concerning this compound?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Thalidomide and L-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that

Correct AnswerverifiedShow Answer

The following questions refer to the molecules shown in Figure 4.7. A. B. C. D. E. -Which molecule has a carbonyl functional group in the form of an aldehyde?

Correct AnswerverifiedShow Answer

Choose the term that correctly describes the relationship between these two sugar molecules:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Figure 4.4 -What is the name of the functional group shown in Figure 4.4?

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Why are hydrocarbons insoluble in water?

Correct AnswerverifiedShow Answer

The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which of the following hydrocarbons has a double bond in its carbon skeleton?

Correct AnswerverifiedShow Answer

The following questions refer to the molecules shown in Figure 4.7. A. B. C. D. E. -Which molecule is water soluble because it has a hydroxyl functional group?

Correct AnswerverifiedShow Answer

-The two molecules shown in Figure 4.1 are best described as

Correct AnswerverifiedShow Answer

The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Which molecule functions to transfer energy between organic molecules?

Correct AnswerverifiedShow Answer

How many structural isomers are possible for a substance having the molecular formula C₄H₁₀?

Correct AnswerverifiedShow Answer

How many electron pairs does carbon share in order to complete its valence shell?

Correct AnswerverifiedShow Answer

Which functional group is not present in this molecule?

Correct AnswerverifiedShow Answer

The following questions refer to the molecules shown in Figure 4.8. A. B. C. D. E. -Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other?

Correct AnswerverifiedShow Answer

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