BIOL 101Cell Membrane Quiz Score:100% Points: 80 out of 80
BIOL 101Cell Membrane Quiz
Cell Membrane Quiz
Schedule:
After deadline.Ended 09/06/2019 11:59 PM EDT
Attempt 1 of 2
Started:09/02/2019 12:03 PM EDT
Submitted:09/02/2019 12:09 PM EDT
Score:100%
Points:80 out of 80
Question 1
Points: 10 out of 10
Which of the following can cross the cell’s plasma membrane without the assistance of protein transporters? Select all that apply.
•             small hydrophobic molecules
•             large polar molecules
•             gasses
•             positively charged ions
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Question 2
Points: 10 out of 10
Which substance would be most likely to pass through a lipid bilayer/plasma membrane without embedded proteins?
•             a large fatty acid
•             water
•             a large peptide hormone
•             a steroid hormone
•             a sodium ion
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Question 3
Points: 10 out of 10
Which component of the plasma membrane has the widest variety of functions?
•             proteins
•             phospholipids
•             sterols
•             carbohydrates
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Question 4
Points: 10 out of 10
All of the following have an effect on the fluidity of a membrane except:
•             the cholesterol content
•             the ratio of saturated to unsaturated fatty acids
•             the presence of integral proteins in the membrane
•             interactions among fatty acids in the core of the bilayer
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Question 5
Points: 10 out of 10
A set of erythrocytes is placed in a beaker of 0.9% NaCl. Nothing appears to happen to the cells. Why?
•             water has not moved at all.
•             Sodium blocks the movement of water.
•             0.9% NaCl is hypertonic to the cells.
•             0.9% NaCl is iostonic to the cells.
•             0.9% NaCl is hypotonic to the cells.
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Question 6
Points: 10 out of 10
What is the role of carbohydrates in the plasma membrane?
•             cellular identification
•             adhesion
•             help maintain fluidity
•             transport materials across the membrane
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Question 7
Points: 10 out of 10
Biological Membranes are:
•             impermeable.
•             static.
•             dynamic.
•             symmetrical.
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Question 8
Points: 10 out of 10
How does the selective permeability of the membrane help the cell.
•             This allows the cell to maintain the proper shape.
•             This allows the cell to regulate what enters and exits
•             This allows the cell to maintain a constant temperature.
•             All of these
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