Red blood cells are approximately 0.25% salt. Red blood cells are then placed in 2% salt solution, what happens? Also is the cell itself hypotonic, hypertonic, or isotonic? Then, is the environment hypotonic, hypertonic, or isotonic? Then, will water flow in or out of the cell? Then, will the size of the cell increase, decrease, or stay the same?
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The percent of salt in Red blood cells, in this case, is lower than that of the environment. If the environment's salt concentration is higher, water would flow out these Red blood cells that have lower salt concentration than the environment, and the size of the Red blood cells will decrease. The environment would be considered initially hypertonic with respect to the cells, and the cells themselves would be considered hypotonic with respect to the salty hypertonic environment.
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