Biology 101 Test Bank
Biology101Test
Bank
Water and Life
,1. In a single molecule of water, two hydrogen atoms
arebonded to a single oxygen atom by?
A. hydrogen bonds.
B. nonpolar covalent bonds.
C. polar covalent bonds.
D. ionic bonds.
E. van der Waals interactions.
2. In a group of water molecules, hydrogen bonds
formbetween?
A. the oxygen atoms in different water molecules
B. Two hydrogen atoms in different water molecules
C. the oxygen atom in one water molecule and
ahydrogen atom in another water molecule
D. the hydrogen atoms in a single water molecule
E. None of the listed responses is Correct
3. Life on Earth is dependent on all the properties of watertas
well as the abundance of water. Which property of water
is probably most important for the functioning of
organisms at the molecular level?
A. high specific heat
B. cohesion and high surface tension
C. versatility as a solvent
D. expansion upon freezing
E. high heat of vaporization
4. Some substances, such as oil and gasoline, will
nottdissolve in water because?
A. oil and gasoline are organic compounds,
B. their molecules have no charges or partial charges
towhich water molecules can adhere
C. their electrons are so stable that they do not
exchangeatoms with water molecules
D. they do not ionize
E. their molecules are so large
7
,5. The partial charges on a water molecule occur
becauseof?
A. widespread ionization
B. the unequal sharing of electrons between the
hydrogen and the oxygen atoms of a water
molecule
C. the high electronegativity of hydrogen
D. covalent bonding
E. the achievement of a stable configuration by one atom of
abond but not by the other partner
6. Water molecules have than molecules of
similartsize, such as ammonia and methane,
reflecting its capacity to absorb large amounts of
heat.
A. less surface tension
B. a higher boiling point
C. a lower capacity for forming
D. lower specific heat hydrogen bonds
E. a lower melting point
7. Most of water's unique features (for example, its
versatility as a solvent, ability to moderate
temperature,and cohesive behavior) result from the
fact that?
A. hydrogen is the only element without any neutrons.
B. oxygen attracts electrons more than hydrogen does.
C. oxygen has only one stable isotope, but hydrogen
hasthree.
D. oxygen has two unfilled electron shells.
E. More than one of the above is Correct.
8
, 8. The slight negative charge at one end of one water
molecule is attracted to the slight positive charge of
another water molecule. What is this attraction called?
A. a covalent bond
B. a hydrogen bond
C. an ionic bond
D. a hydrophilic bond
E. a van der Waals interaction
9. Sulfur is in the same column of the periodic table
asoxygen, but has electronegativity similar to
carbon. Compared to water molecules, molecules of
H2S?
A. will ionize more readily.
B. will have greater cohesion to other molecules of H 2S.
C. will have a greater tendency to form hydrogen bonds
witheach other.
D. will have a higher capacity to absorb heat for the
samechange in temperature.
E. will not form hydrogen bonds with each other.
10. Water molecules are able to form hydrogen bonds with?
A. compounds that have polar covalent bonds.
B. oils.
C. oxygen gas (O2. molecules.
D. chloride ions.
E. any compound that is not soluble in water.
9
Biology101Test
Bank
Water and Life
,1. In a single molecule of water, two hydrogen atoms
arebonded to a single oxygen atom by?
A. hydrogen bonds.
B. nonpolar covalent bonds.
C. polar covalent bonds.
D. ionic bonds.
E. van der Waals interactions.
2. In a group of water molecules, hydrogen bonds
formbetween?
A. the oxygen atoms in different water molecules
B. Two hydrogen atoms in different water molecules
C. the oxygen atom in one water molecule and
ahydrogen atom in another water molecule
D. the hydrogen atoms in a single water molecule
E. None of the listed responses is Correct
3. Life on Earth is dependent on all the properties of watertas
well as the abundance of water. Which property of water
is probably most important for the functioning of
organisms at the molecular level?
A. high specific heat
B. cohesion and high surface tension
C. versatility as a solvent
D. expansion upon freezing
E. high heat of vaporization
4. Some substances, such as oil and gasoline, will
nottdissolve in water because?
A. oil and gasoline are organic compounds,
B. their molecules have no charges or partial charges
towhich water molecules can adhere
C. their electrons are so stable that they do not
exchangeatoms with water molecules
D. they do not ionize
E. their molecules are so large
7
,5. The partial charges on a water molecule occur
becauseof?
A. widespread ionization
B. the unequal sharing of electrons between the
hydrogen and the oxygen atoms of a water
molecule
C. the high electronegativity of hydrogen
D. covalent bonding
E. the achievement of a stable configuration by one atom of
abond but not by the other partner
6. Water molecules have than molecules of
similartsize, such as ammonia and methane,
reflecting its capacity to absorb large amounts of
heat.
A. less surface tension
B. a higher boiling point
C. a lower capacity for forming
D. lower specific heat hydrogen bonds
E. a lower melting point
7. Most of water's unique features (for example, its
versatility as a solvent, ability to moderate
temperature,and cohesive behavior) result from the
fact that?
A. hydrogen is the only element without any neutrons.
B. oxygen attracts electrons more than hydrogen does.
C. oxygen has only one stable isotope, but hydrogen
hasthree.
D. oxygen has two unfilled electron shells.
E. More than one of the above is Correct.
8
, 8. The slight negative charge at one end of one water
molecule is attracted to the slight positive charge of
another water molecule. What is this attraction called?
A. a covalent bond
B. a hydrogen bond
C. an ionic bond
D. a hydrophilic bond
E. a van der Waals interaction
9. Sulfur is in the same column of the periodic table
asoxygen, but has electronegativity similar to
carbon. Compared to water molecules, molecules of
H2S?
A. will ionize more readily.
B. will have greater cohesion to other molecules of H 2S.
C. will have a greater tendency to form hydrogen bonds
witheach other.
D. will have a higher capacity to absorb heat for the
samechange in temperature.
E. will not form hydrogen bonds with each other.
10. Water molecules are able to form hydrogen bonds with?
A. compounds that have polar covalent bonds.
B. oils.
C. oxygen gas (O2. molecules.
D. chloride ions.
E. any compound that is not soluble in water.
9
