Question 1

Differences in which of the following chemical characteristics are responsible for the uniqueness of individuals organisms?

Accepted Answer

A)   elemental composition from organism to organism
B)   types and relative amounts of organic molecules synthesized by each organism
C)   sizes of the organic molecules in each organism
D)   types of inorganic compounds present in each organismE) B) and D)
F) A) and B)

Question 2

Use the figures to answer the question.  Which of the functional groups shown in the figure is present in hexanol but not in hexane?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) A) and C)
F) B) and C)

Question 3

Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In which of the following ways do these molecules differ from each other?

Accepted Answer

A)   They are structural isomers but have the same molecular formula.
B)   They are cis-trans isomers but have the same molecular formula.
C)   They have different functional groups attached to the same carbon skeleton.
D)   They are enantiomers of the same organic molecule.E) B) and C)
F) A) and B)

Question 4

Thalidomide was sold as "racemic mixture" to pregnant women to treat morning sickness during pregnancy but the drug was found to harm fetus in the womb. It was banned in 1962. Which of the following reasons is the best explanation of the harmful effects of the drug?

Accepted Answer

A)   Racemic mixture of any compound is always toxic and should be avoided.
B)   (+) (R) -thalidomide is a sedative, but (-) (S) -thalidomide is a teratogen (a drug that is toxic in nature) .
C)   Thalidomide is not isomeric in nature thus causes adverse events.
D)   Thalidomide was under dosed.E) None of the above
F) B) and C)

Question 5

Which action could produce a carbonyl group?

Accepted Answer

A)   the replacement of the -OH of a carboxyl group with hydrogen
B)   the addition of a thiol to a hydroxyl
C)   the addition of a hydroxyl to a phosphate
D)   the replacement of the nitrogen of an amine with oxygenE) A) and B)
F) A) and C)

Question 6

Use the figures to answer the following question.  Which molecule shown can increase the concentration of hydrogen ions in a solution and is therefore an organic acid?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) B) and D)
F) None of the above

Question 7

The maximum number of hydrogen atoms in an alkane with six carbons is ________.

Accepted Answer

A)   6
B)   10
C)   12
D)   14E) B) and C)
F) All of the above

Question 8

How many electrons must one carbon atom share with other atom or atoms to complete its valence shell?

Accepted Answer

A)   two
B)   three
C)   four
D)   eightE) A) and B)
F) A) and C)

Question 9

Which of the following characteristics is responsible for the complexity and variety of organic molecules?

Accepted Answer

A)   the chemical versatility of carbon atoms
B)   the variety of rare elements in organic molecules
C)   the diverse bonding patterns of nitrogen
D)   their interaction with waterE) C) and D)
F) B) and C)

Question 10

Which of the following compounds is found in vinegar?

Accepted Answer

A)   nitric acid
B)   acetic acid
C)   amino acid
D)   propionic acidE) B) and D)
F) C) and D)

Question 11

Which chemical group is most likely to be responsible for an organic molecule behaving as a base?

Accepted Answer

A)   hydroxyl
B)   carbonyl
C)   amino
D)   phosphateE) A) and B)
F) A) and C)

Question 12

Research indicates that ibuprofen, a drug used to relieve inflammation and pain, is a mixture of two enantiomers; what are enantiomers?

Accepted Answer

A)   Molecules that have identical chemical formulas but differ in the branching of their carbon skeletons.
B)   Molecules that are mirror images of each other.
C)   Molecules that differ in the location of their double bonds.
D)   Molecules that differ in the arrangement of atoms around their double bonds.E) C) and D)
F) A) and B)

Exam 4: Carbon: the Basis of Molecular Diversity

Use the figures to answer the question. Which of the functional groups shown in the figure is present in hexanol but not in hexane?

Correct Answer
verified

Differences in which of the following chemical characteristics are responsible for the uniqueness of individuals organisms?

Correct Answer
verified

Which chemical group is most likely to be responsible for an organic molecule behaving as a base?

Correct Answer
verified

Use the figures to answer the following question. Which molecule shown can increase the concentration of hydrogen ions in a solution and is therefore an organic acid?

Correct Answer
verified

Research indicates that ibuprofen, a drug used to relieve inflammation and pain, is a mixture of two enantiomers; what are enantiomers?

Correct Answer
verified

Which of the following characteristics is responsible for the complexity and variety of organic molecules?

Correct Answer
verified

Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In which of the following ways do these molecules differ from each other?

Correct Answer
verified

How many electrons must one carbon atom share with other atom or atoms to complete its valence shell?

Correct Answer
verified

The maximum number of hydrogen atoms in an alkane with six carbons is ________.

Correct Answer
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Which action could produce a carbonyl group?

Correct Answer
verified

Thalidomide was sold as "racemic mixture" to pregnant women to treat morning sickness during pregnancy but the drug was found to harm fetus in the womb. It was banned in 1962. Which of the following reasons is the best explanation of the harmful effects of the drug?

Correct Answer
verified

Which of the following compounds is found in vinegar?

Correct Answer
verified

Exam 4: Carbon: the Basis of Molecular Diversity

Use the figures to answer the question. Which of the functional groups shown in the figure is present in hexanol but not in hexane?

Correct AnswerverifiedShow Answer

Differences in which of the following chemical characteristics are responsible for the uniqueness of individuals organisms?

Correct AnswerverifiedShow Answer

Which chemical group is most likely to be responsible for an organic molecule behaving as a base?

Correct AnswerverifiedShow Answer

Use the figures to answer the following question. Which molecule shown can increase the concentration of hydrogen ions in a solution and is therefore an organic acid?

Correct AnswerverifiedShow Answer

Research indicates that ibuprofen, a drug used to relieve inflammation and pain, is a mixture of two enantiomers; what are enantiomers?

Correct AnswerverifiedShow Answer

Which of the following characteristics is responsible for the complexity and variety of organic molecules?

Correct AnswerverifiedShow Answer

Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In which of the following ways do these molecules differ from each other?

Correct AnswerverifiedShow Answer

How many electrons must one carbon atom share with other atom or atoms to complete its valence shell?

Correct AnswerverifiedShow Answer

The maximum number of hydrogen atoms in an alkane with six carbons is ________.

Correct AnswerverifiedShow Answer

Which action could produce a carbonyl group?

Correct AnswerverifiedShow Answer

Thalidomide was sold as "racemic mixture" to pregnant women to treat morning sickness during pregnancy but the drug was found to harm fetus in the womb. It was banned in 1962. Which of the following reasons is the best explanation of the harmful effects of the drug?

Correct AnswerverifiedShow Answer

Which of the following compounds is found in vinegar?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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