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CAMPBELL BIOLOGY CHAPTER 3 PRACTICE TEST QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY CHAPTER 3 PRACTICE TEST QUESTIONS AND ANSWERS
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CAMPBELL BIOLOGY CHAPTER 3PRACTICE TEST QUESTIONS AND
ANSWERS
Cells are surrounded by water, and cells themselves consist of about 70 to 95% water.
As a result, _____. ( Concept 3.1)
A) a variety of nutrient molecules is readily available as dissolved solutes
B) waste products produced by cell metabolism can be easily removed
C)the temperature of living things tends to change relatively slowly
D)dissolved substances can be easily transported within a cell or between cells in
multicellular organisms
E) All of the listed responses are correct. - Answer-E
Water is a polar molecule. This means that _____.
A) the opposite ends of the molecule have opposite electrical charges
B) the atoms in water have equal electronegativities
C)water is one of the many hydrophobic molecules
D)water molecules are linear, like a pole
E) All of the listed responses are correct. - Answer-A
The partial charges on a water molecule occur because of _____. ( Concept 3.1)
A) the high electronegativity of hydrogen
B) the achievement of a stable configuration by one atom of a bond but not by the other
partner
C)widespread ionization
D)covalent bonding
E) the unequal sharing of electrons between the hydrogen and the oxygen atoms of a
water molecule - Answer-E
In a group of water molecules, hydrogen bonds form between _____. ( Concept 3.1)
A) two hydrogen atoms in different water molecules
B) the hydrogen atoms in a single water molecule
C) the oxygen atoms in different water molecules
D) the oxygen atom in one water molecule and a hydrogen atom in another water
molecule
E) None of the listed responses is correct. - Answer-D
Which of the following accurately relates the emergent properties of water to the effects
of global warming in the Arctic?
, A) An increase in water temperature due to global warming will cause the sea ice
formed in the Arctic to be denser and less buoyant.
B) The significant increase in Arctic air temperature over the past 50 years is causing
sea ice to form later in the year, to melt earlier, and to cover a smaller area each year.
C) Although a significant increase of air temperature has occurred in the Arctic over the
past 50 years, the specific heat of water has thus far buffered against any significant
increases in the Arctic ocean temperatures.
D)Although it is feared that sea ice around Alaska and northern Canada may be greatly
reduced by atmospheric warming, the high specific heat of water has so far buffered
these sea ice communities from significant impacts.
E) None of the listed responses accurately presen - Answer-B
If water were not a polar molecule, how would the effects of global warming differ from
what are currently observed or predicted to occur in the future? ( Concept 3.2)
A) The effects would be worse because a loss of the polar molecular structure would
lead to a greater amount of heat absorbed by water molecules and, thus, an increase in
its specific heat.
B) The effects would be only slightly worse because there are other polar molecules,
such as methane, with only slightly lower specific heat values than water that can
moderate climate as water does.
C)The effects would be drastically worse because the loss of the polar nature of water
would greatly reduce its specific heat and its ability to moderate temperature.
D)The effects would be marginally different due to the fact that water, as a polar
molecule, is a greenhouse gas in its vapor state.
E) None of the choices accurately describes how and why the effects - Answer-C
What water-related evidence do scientists have that suggests life may exist on other
planets? (Concept 3.2)
A) The robotic spacecraft Phoenix detected microbial life-forms in the ice found
beneath surface material on Mars's surface.
B) Space telescope images have revealed what appear to be flowing rivers of water on
the surface of Mars.
C) Although over 200 planets are thought to have some form of water, only Mars has
water that exists in all three states: liquid, ice and vapor.
D) In 2008, the robotic spacecraft Phoenix found ice present just under the material on
Mars's surface, and detected sufficient water vapor in the Martian atmosphere for frost
to form.
E) None of the listed responses is valid. - Answer-D
The tendency of water molecules to stay close to each other as a result of hydrogen
bonding _____. (Concept 3.2)
A) provides the surface tension that allows leaves to float on water
B) is called cohesion
C)acts to moderate temperature
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