Multiple Choice
What is the term for the movement of water across a cell membrane?
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6. The Membrane
Osmosis
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Why does water move through a selectively permeable membrane during osmosis?
A
To decrease the solute concentration outside the cell
B
To balance solute concentrations on both sides of the membrane
C
To transport nutrients across the membrane
D
To increase the solute concentration inside the cell
Verified step by step guidance1
Understand the concept of osmosis: Osmosis is the movement of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.
Recognize the role of the selectively permeable membrane: This membrane allows only certain molecules, like water, to pass through while blocking others, such as solutes.
Identify the driving force of osmosis: The primary goal of osmosis is to balance solute concentrations on both sides of the membrane, achieving equilibrium.
Consider the effects of osmosis on cells: Water movement during osmosis can cause cells to swell or shrink, depending on the direction of water flow relative to solute concentration.
Relate osmosis to cellular function: Osmosis is crucial for maintaining cell homeostasis, ensuring that cells do not become too dehydrated or overly saturated with water.
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