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 cells plasma membrane without the assistance of protein transporters? Select all that apply. small hydrophobic molecules large polar molecules gasses positively charged ions Feedback 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 Feedback Question 3 Points: 10 out of 10 Which component of the plasma membrane has the widest variety of functions? proteins phospholipids sterols carbohydrates Feedback 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 Feedback 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. Feedback 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 Feedback Question 7 Points: 10 out of 10 Biological Membranes are: impermeable. static. dynamic. symmetrical. Feedback 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 Feedback
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