Osmosis & Diffusion Review Sheet
Osmosis & Diffusion Review Sheet Name:
Fill in the Blank away low high hypertonic hypotonic diffusion molecules osmosis vacuole water solute permeable towards semi-permeable concentration gradient
1. The cell membrane regulates and controls what kind of molecules ______ move in & out of the cell.
2. When molecules spread from an area of high to low concentration, it is called _Diffusion_____.
3. As molecules diffuse, they create a _concentration gradient_____, which is a difference in concentrations across space.
4. Cell membranes are _semi-permeable_____. This means that they only allow certain things to pass through.
5. A membrane that would allow ANYTHING to pass through it would be called permeable______.
6. Diffusion is the movement of molecules. Osmosis is the diffusion of _water_____.
7. _Osmosis_____ is the process of water molecules moving across a cell membrane.
8. The direction that water molecules move is determined by the difference in the concentration of _Solute_____ dissolved in the solvent inside and outside the cell.
9. Osmotic pressure, or osmosis, pushes water molecules __toward____ the area of greater solute concentration.
10. Water molecules are pulled _away_____ from areas of lower solute concentration.
11. The word hypertonic means _higher_____ concentration of solutes.
12. The word hypotonic means _lower_____ concentration of solutes.
13. An animal cell undergoes crenation of the cell membrane, when it is placed in a solution with a HIGH concentration of solute. What type of solution causes crenation? _Hypertonic_____
14. An animal cell undergoes cytolysis, or stretching of the cell membrane, when it is placed in a solution with a very LOW concentration of solute. What type of solution causes cytolysis? _Hypotonic_____
Answer the following questions about isotonic Solutions
15. The concentration of the solutes inside the cell is _equal_____ to the
Fill in the Blank away low high hypertonic hypotonic diffusion molecules osmosis vacuole water solute permeable towards semi-permeable concentration gradient
1. The cell membrane regulates and controls what kind of molecules ______ move in & out of the cell.
2. When molecules spread from an area of high to low concentration, it is called _Diffusion_____.
3. As molecules diffuse, they create a _concentration gradient_____, which is a difference in concentrations across space.
4. Cell membranes are _semi-permeable_____. This means that they only allow certain things to pass through.
5. A membrane that would allow ANYTHING to pass through it would be called permeable______.
6. Diffusion is the movement of molecules. Osmosis is the diffusion of _water_____.
7. _Osmosis_____ is the process of water molecules moving across a cell membrane.
8. The direction that water molecules move is determined by the difference in the concentration of _Solute_____ dissolved in the solvent inside and outside the cell.
9. Osmotic pressure, or osmosis, pushes water molecules __toward____ the area of greater solute concentration.
10. Water molecules are pulled _away_____ from areas of lower solute concentration.
11. The word hypertonic means _higher_____ concentration of solutes.
12. The word hypotonic means _lower_____ concentration of solutes.
13. An animal cell undergoes crenation of the cell membrane, when it is placed in a solution with a HIGH concentration of solute. What type of solution causes crenation? _Hypertonic_____
14. An animal cell undergoes cytolysis, or stretching of the cell membrane, when it is placed in a solution with a very LOW concentration of solute. What type of solution causes cytolysis? _Hypotonic_____
Answer the following questions about isotonic Solutions
15. The concentration of the solutes inside the cell is _equal_____ to the