Question 1

Which functional group is not present in this molecule?

Accepted Answer

A)   carboxyl
B)   sulfhydryl
C)   hydroxyl
D)   aminoE) A) and B)
F) All of the above

Question 2

Organic molecules with only hydrogens and five carbon atoms cannot ________.

Accepted Answer

A)   have a branching carbon skeleton
B)   have different combinations of double bonds between carbon atoms
C)   have different positions of double bonds between carbon atoms
D)   form enantiomersE) A) and B)
F) None of the above

Question 3

Which of the following statements is true?

Accepted Answer

A)   ADP contains more energy than ATP.
B)   Following hydrolysis, ATP can give off one phosphate, whereas ADP cannot.
C)   ADP can have two positive charges.
D)   ATP can have four negative charges.E) A) and B)
F) B) and D)

Question 4

The two molecules shown in the figures are best described as ________.

Accepted Answer

A)   enantiomers
B)   structural isomers
C)   cis-trans isomers
D)   chain length isomersE) All of the above
F) B) and C)

Question 5

Stanley Miller's 1953 experiments supported the hypothesis that ________.

Accepted Answer

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

Question 6

Each bond in carbon dioxide represents ________.
 O=C=O\mathrm { O } = \mathrm { C } = \mathrm { O }O=C=O

Accepted Answer

A)   one resonating electron
B)   a pair of shared electrons
C)   two pairs of shared electrons
D)   a pair of protons E) A) and B)
F) A) and C)

Question 7

Use the figures to answer the question. A.
B.
C.
D. Which molecule(s)  shown is (are)  ionised in a cell?

Accepted Answer

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

Question 8

A.
B.
C.
D.
-Which molecule has at least one carbon atom attached to three different chemical groups?

Accepted Answer

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

Question 9

Miller's classic experiment demonstrated that a discharge of sparks through a mixture of gases could result in the formation of a large variety of organic compounds. Miller did not use ________ as one of the gases in his experiment.

Accepted Answer

A)   methane
B)   oxygen
C)   water
D)   ammoniaE) B) and D)
F) None of the above

Question 10

A.  −OH- \mathrm { OH }−OH 
B. 
C.  −NH2- \mathrm { NH } _ { 2 }−NH2​ 
D.  −SH- \mathrm { SH }−SH 
- Which of the functional groups shown is present in ethanol but not in ethane?

Accepted Answer

A)   A
B)   B
C)   C
D)   D E) All of the above
F) A) and B)

Question 11

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 diverse bonding patterns of nitrogen
D)   their interaction with waterE) A) and B)
F) A) and C)

Question 12

A.  −OH- \mathrm { OH }−OH 
B. 
C.  −NH2- \mathrm { NH } _ { 2 }−NH2​ 
D.  −SH- \mathrm { SH }−SH 
- Which of the groups 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) B) and C)
F) C) and D)

Question 13

A.
B.
C.
D. 
- Which molecule shown above contains a functional group that is a part of the molecule known as the "energy currency of living organisms"?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) A) and C)
F) All of the above

Question 14

Which of the following is true of carbon?

Accepted Answer

A)   It forms only polar molecules.
B)   It can form a maximum of three covalent bonds with other elements.
C)   It is highly electronegative.
D)   It can form both polar and nonpolar bonds.E) B) and C)
F) A) and B)

Question 15

In an ethane (C2H6)  molecule, each carbon atom is bonded to ________ hydrogen atoms.

Accepted Answer

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

Question 16

Differences among organisms are caused by differences in the ________.

Accepted Answer

A)   elemental composition from organism to organism
B)   types and relative amounts of organic molecules synthesised 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) B) and C)

Question 17

- The figure shows the structures of glucose and fructose. These two molecules differ in the ________.

Accepted Answer

A)   number of carbon, hydrogen, and oxygen atoms
B)   types of carbon, hydrogen, and oxygen atoms
C)   arrangement of carbon, hydrogen, and oxygen atoms
D)   number of oxygen atoms joined to carbon atoms by double covalent bondsE) None of the above
F) A) and D)

Question 18

The element present in all organic molecules is ________.

Accepted Answer

A)   hydrogen
B)   oxygen
C)   carbon
D)   nitrogenE) A) and C)
F) B) and C)

Exam 4: Carbon and the Molecular Diversity of Life

A. B. C. D. -Which molecule has at least one carbon atom attached to three different chemical groups?

Correct Answer
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Each bond in carbon dioxide represents ________. $\mathrm { O } = \mathrm { C } = \mathrm { O }$

Correct Answer
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Correct Answer
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The two molecules shown in the figures are best described as ________.

Correct Answer
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- The figure shows the structures of glucose and fructose. These two molecules differ in the ________.

Correct Answer
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Which of the following statements is true?

Correct Answer
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Use the figures to answer the question. A. B. C. D. Which molecule(s) shown is (are) ionised in a cell?

Correct Answer
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Which of the following is true of carbon?

Correct Answer
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Miller's classic experiment demonstrated that a discharge of sparks through a mixture of gases could result in the formation of a large variety of organic compounds. Miller did not use ________ as one of the gases in his experiment.

Correct Answer
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Differences among organisms are caused by differences in the ________.

Correct Answer
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Correct Answer
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Organic molecules with only hydrogens and five carbon atoms cannot ________.

Correct Answer
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A. B. C. D. - Which molecule shown above contains a functional group that is a part of the molecule known as the "energy currency of living organisms"?

Correct Answer
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In an ethane (C₂H₆) molecule, each carbon atom is bonded to ________ hydrogen atoms.

Correct Answer
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The element present in all organic molecules is ________.

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

Correct Answer
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Stanley Miller's 1953 experiments supported the hypothesis that ________.

Correct Answer
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The complexity and variety of organic molecules is due to ________.

Correct Answer
verified

Exam 4: Carbon and the Molecular Diversity of Life

A. B. C. D. -Which molecule has at least one carbon atom attached to three different chemical groups?

Correct AnswerverifiedShow Answer

Each bond in carbon dioxide represents ________. O=C=O\mathrm { O } = \mathrm { C } = \mathrm { O }O=C=O

Correct AnswerverifiedShow Answer

A. −OH- \mathrm { OH }−OH B. C. −NH2- \mathrm { NH } _ { 2 }−NH2​ D. −SH- \mathrm { SH }−SH - Which of the functional groups shown is present in ethanol but not in ethane?

Correct AnswerverifiedShow Answer

The two molecules shown in the figures are best described as ________.

Correct AnswerverifiedShow Answer

- The figure shows the structures of glucose and fructose. These two molecules differ in the ________.

Correct AnswerverifiedShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

Use the figures to answer the question. A. B. C. D. Which molecule(s) shown is (are) ionised in a cell?

Correct AnswerverifiedShow Answer

Which of the following is true of carbon?

Correct AnswerverifiedShow Answer

Miller's classic experiment demonstrated that a discharge of sparks through a mixture of gases could result in the formation of a large variety of organic compounds. Miller did not use ________ as one of the gases in his experiment.

Correct AnswerverifiedShow Answer

Differences among organisms are caused by differences in the ________.

Correct AnswerverifiedShow Answer

A. −OH- \mathrm { OH }−OH B. C. −NH2- \mathrm { NH } _ { 2 }−NH2​ D. −SH- \mathrm { SH }−SH - Which of the groups is an acidic functional group that can dissociate and release H? into a solution?

Correct AnswerverifiedShow Answer

Organic molecules with only hydrogens and five carbon atoms cannot ________.

Correct AnswerverifiedShow Answer

A. B. C. D. - Which molecule shown above contains a functional group that is a part of the molecule known as the "energy currency of living organisms"?

Correct AnswerverifiedShow Answer

In an ethane (C2H6) molecule, each carbon atom is bonded to ________ hydrogen atoms.

Correct AnswerverifiedShow Answer

The element present in all organic molecules is ________.

Correct AnswerverifiedShow Answer

Which functional group is not present in this molecule?

Correct AnswerverifiedShow Answer

Stanley Miller's 1953 experiments supported the hypothesis that ________.

Correct AnswerverifiedShow Answer

The complexity and variety of organic molecules is due to ________.

Correct AnswerverifiedShow Answer

Correct Answer
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Each bond in carbon dioxide represents ________. $\mathrm { O } = \mathrm { C } = \mathrm { O }$

Correct Answer
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In an ethane (C₂H₆) molecule, each carbon atom is bonded to ________ hydrogen atoms.

Correct Answer
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