Test: AP Biology

1.

Water often travels between cells and the environment via osmosis, where it diffuses from areas with low solute concentration (where more water is present) to areas with higher solute concentration (where there is relatively less water). Which answer choice is an example of osmosis?

A normal cell is placed in pure water; water from the environment flows into the cell and causes it to swell

A normal cell is placed in pure water; water from the cell flows out into the surrounding liquid and causes the cell to shrink

A cell is placed in an isotonic environment and immediately loses a great deal of its water content to its surroundings

A cell is placed in a hypertonic environment; water flows into the cell and causes it to swell

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