1. The Movement of Water by Osmosis
Chapter 4
The Movement of Water by Osmosis

2. Diffusion and Osmosis
Solutes are: _____________________________________________
This movement of molecules is called:________________________

3. Diffusion of water is called: _____________________

5. Ocean Water contains solutes.
Which solute would be considered the main solute? _____________
The results is that too much water leaves animals’ bodies.
What effect would this have on the animal’s cells. ________________
These organisms must find ways to deal with this diffusion and osmosis.

6. Regulation of Solute/Water Balance
Osmoconformers
- Internal concentration varies as the salinity in the water around them changes
- Most can tolerate a (very narrow / large) range of salinity
Give 4 Examples:
1)_______________________________
2)_______________________________
3)_______________________________
4)_______________________________

7. Regulation of Solute/Water Balance
Osmoregulators
- Control their internal concentrations
- Most can tolerate a (very narrow / wider
range) range of salinity
Give 4 Examples:
1)_______________________________
2)_______________________________
3)_______________________________
4)_______________________________