Campbell Biology Chapter 3 Practice Test 100% Correct!!
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Course
Campbell Biology
Institution
Campbell Biology
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 livin...
Campbell Biology Chapter 3 Practice
Test 100% Correct!!
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
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
D)keeps water moving through the vessels in a tree trunk
E)All of the listed responses are correct. - ANSWER E
What do cohesion, surface tension, and adhesion have in common with reference to water?
( Concept 3.2)
A)All are produced by covalent bonding.
B)All are aspects of a crystalline structure.
C)All are results of the structure of the hydrogen atom.
D)All are properties related to hydrogen bonding.
E)All have to do with ionic interactions. - ANSWER D
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 _____. ( Concept 3.2)
A)oxygen attracts electrons more than hydrogen does
B)oxygen has two unfilled electron shells
C)oxygen has only one stable isotope, but hydrogen has three
D)hydrogen is the only element without any neutrons
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