Batrachotoxin is a poison found in frogs in the Columbian jungle. The poison is used by Native Indians to produce poison darts.
The poison works by increasing the permeability of some cell surface membranes to sodium ions,
which move out of the cells.
Which statements are correct for cells affected by batrachotoxin?
1 The intracellular fluid has a less negative water potential than the extracellular fluid.
2 The extracellular fluid has a less negative water potential than the intracellular fluid.
3 Water leaves the cells by osmosis, causing the cells to shrink.
4 Water enters the cells by osmosis, causing the cells to swell.
1 and 3
2 )
1 and 4
3 )
2 and 3
4 )
2 and 4
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