Test Bank - Biology The Core 23rd Edition by Eric Simon, All Chapters.pdf

Biology
C
101
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TeHAPTER 3
st Bank
Water and Life
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,Chapter 3 Water
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and Life
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,1. In a single molecule of water, two hydrogen atoms are
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bonded to a single oxygen atom by?
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A. hydrogen bonds. n

B. nonpolar covalent bonds. n n

C. polar covalent bonds. n n

D. ionic bonds. n

E. van der Waals interactions.
n n n




2. In a group of water molecules, hydrogen bonds form
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between?

A. the oxygen atoms in different water molecules
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B. Two hydrogen atoms in different water molecules
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C. the oxygen atom in one water molecule and a
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hydrogen atom in another water molecule n n n n n

D. the hydrogen atoms in a single water molecule
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E. None of the listed responses is Correct
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3. Life on Earth is dependent on all the properties of water
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as well as the abundance of water. Which property of wa
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ter is probably most important for the functioning of org
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anisms at the molecular level?
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A. high specific heat
n n n


B. cohesion and high surface tension
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C. versatility as a solvent D.
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expansion upon freezing n n

E. high heat of vaporization
n n n n




4. Some substances, such as oil and gasoline, will not
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dissolve in water because? n n n



A. oil and gasoline are organic compounds,
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B. their molecules have no charges or partial charges to
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which water molecules can adhere n n n n

C. their electrons are so stable that they do not exchange
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atoms with water molecules n n n

D. they do not ionize n n n


E. their molecules are so large
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, 5. The partial charges on a water molecule occur because
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of?
A. widespread ionization n


B. the unequal sharing of electrons between the hydrog
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en and the oxygen atoms of a water molecule
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C. the high electronegativity of hydrogen
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D. covalent bonding n


E. the achievement of a stable configuration by one atom of a b
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ond but not by the other partner
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6. Water molecules have n n n

than molecules of similar n n n n n

size, such as ammonia and methane, reflecting its cap
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acity to absorb large amounts of heat.
n n n n n n




A. less surface tension n n

B. a higher boiling point
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C. a lower capacity for forming D.l
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ower specific heat hydrogen bonds
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E. a lower melting point
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7. Most of water's unique features (for example, its versatil
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ity as a solvent, ability to moderate temperature, and co
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hesive behavior) result from the fact that?
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A. hydrogen is the only element without any neutrons. n n n n n n n

B. oxygen attracts electrons more than hydrogen does.
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C. oxygen has only one stable isotope, but hydrogen has t
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hree.
D. oxygen has two unfilled electron shells.
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E. More than one of the above is Correct.
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