AP Bio Ch. 7 Study Guide
True/False
Indicate whether the
statement is true or false.
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1.
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Interactive question 7.2
A Does the following statement answer the
question?
In hybrid human / mouse cells, membrane proteins rapidly intermix.
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2.
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Interactive question 7.2 B Does
the following statement answer the question?
The cell membranes of the cold lake
population would have a higher proportion of saturated fatty acids in their phospholipids than that
of the population living in warm temperatures.
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3.
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Interactive question
7.4 Do the following statements answer the
question?
Ions and larger polar molecules, such as glucose, are impeded by the hydrophobic
center of the plasma membrane’s lipid bilayer. Passage through the center of a lipid bilayer is
not fast even for small, polar water molecules.
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4.
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Interactive question 7.6 Does the following
question answer the first question?
The protists will gain water from their hypertonic
environment.
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5.
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Interactive question 7.6 Does the following statement answer
the second question?
Protists have membranes that are less permeable to water and
contractile vacuoles that expel excess water.
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6.
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Interactive question 7.8 Do the following
statements answer the question?
Although it speeds diffusion, facilitated diffusion is
still passive transport because the solute is moving against its concentration gradient; the process
is driven by the concentration gradient and not by energy expended by the cell.
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7.
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Interactive question 7.9 Does the following
statement answer the question?
Three Na+ are pumped out of the cell for every two K+
pumped in, resulting in a net movement of positive charge from the cytoplasm to the extracellular
fluid.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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8.
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Interactive question 7.10 A
How is cholesterol transported into
human cells?
a. | diffusion | d. | cotransport | b. | active transport | e. | facilitated diffusion | c. | phagocytosis | f. | receptor-mediated endocytosis |
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9.
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Interactive question 7.10 B
Explain why cholesterol accumulates
in the blood of individuals with the disease familial hypercholesteremia?
a. | The established gradients for diffusion are not steep enough to move LDL particles
due to defective LDL gates | b. | The established gradients for diffusion are too
steep to move LDL particles because of defective LDL gates | c. | There is a lower
amount of cotransport molecules so not enough LDL particles are transported into the
cell | d. | There is a lower amount of ATP available due to the active transport of the higher
LDL particle levels | e. | LDL receptor proteins in the plasma membrane
are defective and will not work |
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Multiple Response
Identify one
or more choices that best complete the statement or answer the question.
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10.
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Interactive question 7.3
Check the six major kinds of functions
that membrane proteins may perform.
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Matching
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Interactive question 7.1 a. | hydrophobic | e. | phosphate
head | b. | hydrophilic | f. | interior region of protein | c. | exterior region of protein | g. | phospholipid bilayer | d. | hydrocarbon
tail |
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11.
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A hydrophobic
or hydrophilic
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12.
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B structure
name
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13.
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C hydrophobic
or hydrophilic
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14.
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D hydrophobic
or hydrophilic
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15.
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E hydrophobic
or hydrophilic
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16.
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A structure
name
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17.
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C structure
name
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18.
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D structure
name
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19.
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E structure
name
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Interactive question 7.5 a. | side A | c. | water will move
from side A to side B | b. | side B | d. | water will move from side B to side
A |
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20.
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Which side initially has more free water
molecules? A or
B
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21.
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Which side initially has fewer free water
molecules? A or B
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22.
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Show the direction of
osmosis.
C or D
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Interactive question 7.7 a. | isotonic | c. | hypotonic | b. | hypertonic |
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23.
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A. The ideal osmotic environment for animal cells is _____________.
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24.
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B. The ideal osmotic environment for plant cells is _____________.
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Structure Your knowledge #2 a. | I | d. | I and II | b. | II | e. | I and
III | c. | III | f. | II and
III |
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25.
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A. Which section represents facilitated diffusion?
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26.
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B. Which section shows active transport?
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27.
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C. Which section shows diffusion?
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28.
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D. Which of these sections are considered passive transport?
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