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Biol 101cell membrane quiz score:100% points: 80 out of 80
BIOL 101Cell Membrane Quiz Score:100% Points: 80 out of 80
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BIOL 101Cell Membrane Quiz
Cell Membrane Quiz
Schedule:
After deadline.Ended 09/06/2019: 2024 – Online Assignment Homework Writing Help Service By Expert Research Writers 11:59 PM EDT
Attempt 1 of 2
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Started:09/02/2019: 2024 – Online Assignment Homework Writing Help Service By Expert Research Writers 12:03 PM EDT
Submitted:09/02/2019: 2024 – Online Assignment Homework Writing Help Service By Expert Research Writers 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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