Multiple Choice
In order for water reabsorption to occur during osmosis in the kidney, the solute concentration of the medulla needs to:
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6. The Membrane
Osmosis
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A human cell placed into a hypertonic solution is likely to:
A
Swell as water moves into the cell
B
Burst due to increased internal pressure
C
Shrink as water moves out of the cell
D
Remain unchanged in size
Verified step by step guidance1
Understand the concept of tonicity: Tonicity refers to the relative concentration of solutes in a solution outside the cell compared to inside the cell. A hypertonic solution has a higher concentration of solutes outside the cell than inside the cell.
Recall the principle of osmosis: Osmosis is the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration to achieve equilibrium.
Analyze the situation: In a hypertonic solution, the solute concentration outside the cell is higher, so water will move out of the cell to balance the solute concentrations.
Predict the effect on the cell: As water leaves the cell, the cell will lose volume and shrink. This process is called crenation in animal cells.
Conclude the correct answer: The human cell will shrink as water moves out of the cell in response to the hypertonic environment.
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