Question

What happens if you place human red blood cells in a concentrated salt solution?

They shrink as water moves from inside to outside the cells as a result of osmosis.
They burst as water moves from outside to inside the cells as a result of osmosis.
No change occurs as water freely diffuses back and forth across the cell membranes.
The cells expend energy pumping water out in response to the greater external salt concentration.

Answer 1

The first one :)