Diffusion and Osmosis
Watch the following animation and answer the following questions.
1) What is the definition for DIFFUSION?
2) Why is diffusion important in Digestive System? What substances are transported this way?
3) Why is diffusion important in the Respiratory System? What substances are transported this way
4) What is a PARTIALLY PERMEABLE MEMBRANE and where are they found?
5) What is the definition for OSMOSIS?
6) What is a simple SOLUTION we can make in the lab?
7) Why is Osmosis very important for plants? What about humans?
2) Why is diffusion important in Digestive System? What substances are transported this way?
3) Why is diffusion important in the Respiratory System? What substances are transported this way
4) What is a PARTIALLY PERMEABLE MEMBRANE and where are they found?
5) What is the definition for OSMOSIS?
6) What is a simple SOLUTION we can make in the lab?
7) Why is Osmosis very important for plants? What about humans?
The effect of different solution concentrations on animal and plant cells
When animal and plant cells are places in solutions of different concentration they behave differently, mainly due to the presence of the cell wall in plants. Please remember and be able to clearly explain what happens to both typs of cell in the following solutions;
- HYPOTONIC SOLUTION: This is a solution with a lower concentration of solutes (dissolved substances) than the cytoplasm inside the cell.
- ISOTONIC SOLUTION: This solution has the same concentration of solutes as the cells cytoplasm
- HYPERTONIC SOLUTION: This solution has a higher concentration of solutes than the cells cytoplasm