Question 1

Individual water molecules bind to each other through:

Accepted Answer

A)  Covalent bonds
B)  Ionic bonds
C)  Hydrogen bonds
D)  Hydrophobic bonds
E)  Non-polar bondsF) A) and D)
G) A) and C)

Question 2

You can painlessly wade into a pool,but doing a belly flop off of the high diving board hurts because of ____ in water.

Accepted Answer

A)  Water's high density
B)  Adhesion
C)  Water's high boiling point
D)  A neutral pH
E)  CohesionF) C) and D)
G) None of the above

Question 3

A process by which cells build large molecules from monomers is:

Accepted Answer

A)  Hydrolysis
B)  Reproduction
C)  Condensation
D)  All are correctE) A) and D)
F) All of the above

Question 4

If a fossil has only 25% of its 14C remaining,how old is it?

Accepted Answer

A)  5,730 years
B)  2,865 years
C)  1,432.5 years
D)  22,920 years
E)  11,460 yearsF) B) and E)
G) C) and D)

Question 5

A process by which cells break polymers down into smaller units is:

Accepted Answer

A)  Hydrolysis
B)  Condensation
C)  Reproduction
D)  All are correctE) B) and D)
F) B) and C)

Question 6

Sugars (CH2O) n dissolve well in water because sugars form ____ bonds with water.

Accepted Answer

A)  Covalent bonds
B)  Ionic bonds
C)  Hydrogen bonds
D)  Hydrophobic bonds
E)  Non-polar bondsF) B) and C)
G) A) and D)

Question 7

In the example of ionic bond formation between sodium and chlorine,which of the following is not a true statement?

Accepted Answer

A)  Na is the chemical symbol for sodium
B)  Chlorine donates an electron
C)  Sodium donates an electron
D)  Sodium becomes positively charged
E)  The bond that is formed is a strong bondF) C) and D)
G) A) and B)

Question 8

An amino acid contains:

Accepted Answer

A)  Nitrogen
B)  Nitrogen and carbon
C)  Carbon
D)  Phosphorous
E)  Carbon and phosphorousF) B) and E)
G) None of the above

Question 9

The mass number of an atom is defined as:

Accepted Answer

A)  The total number of protons, neutrons, and electrons of an atom
B)  The total number of protons and electrons of an atom
C)  The total number of protons and neutrons of an atom
D)  The total number of neutrons and electrons of an atom
E)  The total number of protons of an atomF) A) and E)
G) B) and E)

Question 10

How are the monomers in nucleic acids joined?

Accepted Answer

A)  Peptide bonds between carbohydrates
B)  Peptide bonds between amino acids
C)  Phosphodiester bonds between amino acids
D)  Peptide bonds between nucleotides
E)  Phosphodiester bonds between nucleotidesF) B) and D)
G) A) and D)

Question 11

A substance having a pH of 2 would best be described as:

Accepted Answer

A)  Neutral
B)  A weak acid
C)  A weak base
D)  A strong base
E)  A strong acidF) A) and E)
G) A) and B)

Question 12

How are 13C and 15N different from the more abundant isotopes 12C and 14N?

Accepted Answer

A)  13C and 15N each have one more neutron than 12C and 14N
B)  13C and 15N each have one more proton than 12C and 14N.
C)  13C and 15N each have one less neutron than 12C and 14N,
D)  13C and 15N each have one less proton than 12C and 14N,,
E)  13C and 15N each have one less electron than 12C and 14NF) B) and D)
G) A) and B)

Question 13

Which is not a lipid?

Accepted Answer

A)  A triglyceride
B)  A phospholipid
C)  A wax
D)  A sterol
E)  A starch moleculeF) B) and E)
G) A) and D)

Question 14

An ionic bond is a bond in which:

Accepted Answer

A)  Atoms share electrons
B)  Atoms share a proton
C)  Atoms of opposite charges attract each otherD) A) and B)
E) A) and C)

Question 15

A substance in which other substances dissolve is called a solute.

Accepted Answer

A) True 
 B)False

Question 16

14C and 14N have the same:

Accepted Answer

A)  Atomic number
B)  Number of protons
C)  Atomic mass
D)  Number of neutrons
E)  Number of electronsF) All of the above
G) A) and C)

Exam 2: The Chemistry of Life

A substance having a pH of 2 would best be described as:

Correct Answer
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The mass number of an atom is defined as:

Correct Answer
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Which is not a lipid?

Correct Answer
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An ionic bond is a bond in which:

Correct Answer
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A substance in which other substances dissolve is called a solute.

Correct Answer
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In the example of ionic bond formation between sodium and chlorine,which of the following is not a true statement?

Correct Answer
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Sugars (CH₂O) _n dissolve well in water because sugars form ____ bonds with water.

Correct Answer
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If a fossil has only 25% of its ¹⁴C remaining,how old is it?

Correct Answer
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Individual water molecules bind to each other through:

Correct Answer
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How are the monomers in nucleic acids joined?

Correct Answer
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You can painlessly wade into a pool,but doing a belly flop off of the high diving board hurts because of ____ in water.

Correct Answer
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¹⁴C and ¹⁴N have the same:

Correct Answer
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How are ¹³C and ¹⁵N different from the more abundant isotopes ¹²C and ¹⁴N?

Correct Answer
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An amino acid contains:

Correct Answer
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A process by which cells break polymers down into smaller units is:

Correct Answer
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A process by which cells build large molecules from monomers is:

Correct Answer
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Exam 2: The Chemistry of Life

A substance having a pH of 2 would best be described as:

Correct AnswerverifiedShow Answer

The mass number of an atom is defined as:

Correct AnswerverifiedShow Answer

Which is not a lipid?

Correct AnswerverifiedShow Answer

An ionic bond is a bond in which:

Correct AnswerverifiedShow Answer

A substance in which other substances dissolve is called a solute.

Correct AnswerverifiedShow Answer

In the example of ionic bond formation between sodium and chlorine,which of the following is not a true statement?

Correct AnswerverifiedShow Answer

Sugars (CH2O) n dissolve well in water because sugars form ____ bonds with water.

Correct AnswerverifiedShow Answer

If a fossil has only 25% of its 14C remaining,how old is it?

Correct AnswerverifiedShow Answer

Individual water molecules bind to each other through:

Correct AnswerverifiedShow Answer

How are the monomers in nucleic acids joined?

Correct AnswerverifiedShow Answer

You can painlessly wade into a pool,but doing a belly flop off of the high diving board hurts because of ____ in water.

Correct AnswerverifiedShow Answer

14C and 14N have the same:

Correct AnswerverifiedShow Answer

How are 13C and 15N different from the more abundant isotopes 12C and 14N?

Correct AnswerverifiedShow Answer

An amino acid contains:

Correct AnswerverifiedShow Answer

A process by which cells break polymers down into smaller units is:

Correct AnswerverifiedShow Answer

A process by which cells build large molecules from monomers is:

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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Sugars (CH₂O) _n dissolve well in water because sugars form ____ bonds with water.

Correct Answer
verified

If a fossil has only 25% of its ¹⁴C remaining,how old is it?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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¹⁴C and ¹⁴N have the same:

Correct Answer
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How are ¹³C and ¹⁵N different from the more abundant isotopes ¹²C and ¹⁴N?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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