Question 1

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 2

Which model best depicts a molecule's volume?

Accepted Answer

A)  atomic
B)  molecular
C)  structural
D)  ball-and-stick
E)  space-filling

Question 3

Which of the pairs of molecular structures shown below do not depict enantiomers (enantiomeric forms) of the same molecule?

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 4

Use the following figure to answer the questions below.
 
-Which functional group shown above is characteristic of alcohols?

Accepted Answer

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

Question 5

Which functional groups can act as acids?

Accepted Answer

A)  amino and sulfhydryl
B)  carbonyl and carboxyl
C)  carboxyl and phosphate
D)  hydroxyl and aldehyde
E)  ketone and amino C

Question 6

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 7

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 E

Question 8

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

Question 9

Use the following figure to answer the questions below.
 
-Which of the structures illustrated above cannot form hydrogen bonds with water molecules?

Accepted Answer

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

Question 10

Use the following figure to answer the questions below.
 
-Which molecule shown above has a carbonyl functional group in the form of an aldehyde?

Accepted Answer

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

Question 11

Research indicates that ibuprofen,a drug used to relieve inflammation and pain,is a mixture of two enantiomers,that is,molecules that

Accepted Answer

A)  have identical chemical formulas but differ in the branching of their carbon skeletons.
B)  are mirror images of one another.
C)  exist in either linear chain or ring forms.
D)  differ in the location of their double bonds.
E)  differ in the arrangement of atoms around their double bonds.

Question 12

What determines whether a carbon atom's covalent bonds to other atoms are in a tetrahedral configuration or a planar configuration?

Accepted Answer

A)  the presence or absence of bonds with oxygen atoms
B)  the presence or absence of double bonds between the carbon atom and other atoms
C)  the polarity of the covalent bonds between carbon and other atoms
D)  the presence or absence of bonds with nitrogen atoms
E)  the solvent that the organic molecule is dissolved in

Question 13

What is the abbreviated structural formula good at showing?

Accepted Answer

A)  The carbon skeleton and functional groups of complex organic molecules.
B)  Multiple sequential stereocentres.
C)  Functional groups directly above or below the carbon ring atom.
D)  Axial and equatorial positioning of functional groups.
E)  Stereochemistry.

Question 14

What is an important source of the molecular complexity and diversity of living matter?

Accepted Answer

A)  The unique properties of water.
B)  The variation in carbon skeletons.
C)  The non-polar nature of hydrocarbons.
D)  The diversity of elements on Earth.
E)  Evolution.

Question 15

Use the following figure to answer the questions below.
 
-Which molecule(s) shown above is (are) ionized in aqueous solution at pH 7?

Accepted Answer

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

Question 16

Use the following figure to answer the questions below.
 
-Which molecule shown above contains an amino functional group,but is not an amino acid?

Accepted Answer

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

Question 17

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 18

Use the following figure to answer the questions below.
 
-Which molecule shown above can form a dimer linked by a covalent bond?

Accepted Answer

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

Question 19

Use the following figure to answer the questions below.
 
-In which of the structures illustrated above are the atoms bonded by ionic bonds?

Accepted Answer

A)  A
B)  B
C)  C
D)  C, D, and E only
E)  none of the structures

Question 20

Which model best depicts the angles between atoms in a molecule?

Accepted Answer

A)  atomic
B)  molecular
C)  structural
D)  ball-and-stick
E)  space-filling

Exam 4: Carbon and the Molecular Diversity of Life

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

Correct AnswerverifiedShow Answer

Which model best depicts a molecule's volume?

Correct AnswerverifiedShow Answer

Which of the pairs of molecular structures shown below do not depict enantiomers (enantiomeric forms) of the same molecule?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which functional group shown above is characteristic of alcohols?

Correct AnswerverifiedA

Which functional groups can act as acids?

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedE

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

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which of the structures illustrated above cannot form hydrogen bonds with water molecules?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which molecule shown above has a carbonyl functional group in the form of an aldehyde?

Correct AnswerverifiedShow Answer

Research indicates that ibuprofen,a drug used to relieve inflammation and pain,is a mixture of two enantiomers,that is,molecules that

Correct AnswerverifiedShow Answer

What determines whether a carbon atom's covalent bonds to other atoms are in a tetrahedral configuration or a planar configuration?

Correct AnswerverifiedShow Answer

What is the abbreviated structural formula good at showing?

Correct AnswerverifiedShow Answer

What is an important source of the molecular complexity and diversity of living matter?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which molecule(s) shown above is (are) ionized in aqueous solution at pH 7?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which molecule shown above contains an amino functional group,but is not an amino acid?

Correct AnswerverifiedShow Answer

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

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Use the following figure to answer the questions below. -Which molecule shown above can form a dimer linked by a covalent bond?

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Use the following figure to answer the questions below. -In which of the structures illustrated above are the atoms bonded by ionic bonds?

Correct AnswerverifiedShow Answer

Which model best depicts the angles between atoms in a molecule?

Correct AnswerverifiedShow Answer

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E

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