A set of erythrocytes is placed in a beaker of 0.9% NaCl.
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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