During an investigation, a Barbadian student placed red blood cells in distilled water. After 10 minutes, the cells burst. Which process caused this?

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Question

During an investigation, a Barbadian student placed red blood cells in distilled water. After 10 minutes, the cells burst. Which process caused this?

Accepted Answer

Osmosis — Award 1 mark for identifying osmosis as the movement of water from a region of higher water potential (distilled water) to lower water potential (inside the cell). A is incorrect — active transport requires energy and moves substances against a concentration gradient. C is incorrect — diffusion of oxygen does not cause cells to burst. D is incorrect — exocytosis involves substances leaving the cell, not water entering.

Answer

Osmosis

Answer

Exocytosis

Answer

Diffusion of oxygen

Answer

Active transport

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