SAT Subject Biology Practice Question 253: Answer and Explanation

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Question: 253

3. Red blood cells placed in a hypotonic solution will

A. shrink due to osmotic water loss
B. rupture due to the influx of water
C. maintain their shape due to the cell wall
D. swell but avoid rupturing due to the cell wall
E. pump out excess water with the contractile vacuole

Correct Answer: B

Explanation:

Animal cells placed in a hypotonic solution will rupture as water enters the cell through osmosis. A hypotonic solution has a lower concentration of solutes than the cell.

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