Diffusion Diffusion- movement of any molecule from an area of high concentration to a low concentration Diffusion- movement of any molecule from an.

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Presentation transcript:

Diffusion Diffusion- movement of any molecule from an area of high concentration to a low concentration Diffusion- movement of any molecule from an area of high concentration to a low concentration This is a form of passive transportation This is a form of passive transportation Passive transportation- Transportation of materials without using energy Passive transportation- Transportation of materials without using energy

Osmosis Osmosis is a form of passive transport Osmosis is a form of passive transport the movement of water molecules from an area of high concentration to an area of low concentration. the movement of water molecules from an area of high concentration to an area of low concentration. This is ONLY done with water This is ONLY done with water

Hypertonic Solutions Hypertonic solutions-contain a high concentration of a substance that is not water (e.g. the cell's cytoplasm). Hypertonic solutions-contain a high concentration of a substance that is not water (e.g. the cell's cytoplasm). When a cell is placed in a hypertonic solution, the water moves out of the cell, causing the cell to shrivel. When a cell is placed in a hypertonic solution, the water moves out of the cell, causing the cell to shrivel.

A cell placed in a hypertonic solution

High-Water Low- Solute High-Solute Low-Water

A cell placed in a hypertonic solution

Isotonic Solution Isotonic Solutions-contain the same concentration of water inside the membrane as outside the membrane Isotonic Solutions-contain the same concentration of water inside the membrane as outside the membrane When a cell is placed in an isotonic solution, the water diffuses into and out of the cell at the same rate. When a cell is placed in an isotonic solution, the water diffuses into and out of the cell at the same rate.

Isotonic Solution

Hypotonic Solution Hypotonic solution- contain a lower concentration of the solute and a higher amount of water Hypotonic solution- contain a lower concentration of the solute and a higher amount of water When a cell is placed in a hypotonic solution, the water diffuses into the cell, causing the cell to swell and possibly explode. When a cell is placed in a hypotonic solution, the water diffuses into the cell, causing the cell to swell and possibly explode.

Hypotonic Solution

Active Transport Active transport- movement of molecules from high concentrations to an area of low concentration and must have energy to do this Active transport- movement of molecules from high concentrations to an area of low concentration and must have energy to do this

Questions What is the difference in active and passive transport? What is the difference in active and passive transport? What kind of solution may cause a cell to burst? What kind of solution may cause a cell to burst? What is the name of the transportation that involves water? What is the name of the transportation that involves water?

Questions True or False- Active transport requires energy. True or False- Active transport requires energy. What kind of solution causes a cell to shrink? What kind of solution causes a cell to shrink? What kind of transportation can transport any kind of substance? What kind of transportation can transport any kind of substance?

Questions What is hypotonic solution? What is hypotonic solution? What kind of solution brings in as much water as it pushes out? What kind of solution brings in as much water as it pushes out? What is a hypertonic solution? What is a hypertonic solution? What is passive transportation? What is passive transportation?