Diffusion is the tendency for particles to move from an area of high concentration to an area of low concentration. Concentration gradient is the difference in concentration on two sides of a membrane Passive transport – no energy required by the cell for this to happen O 2 , CO 2.
Concentration gradient is the difference in concentration on two sides of a membrane
Passive transport – no energy required by the cell for this to happen
O2, CO25.14 Passive transport is diffusion across a membrane
Isotonic – the solution outside the cell is equal to the solution of the cytoplasm. Iso means the same.
Water will move equally in both directions.
No net movement across cell membrane.
Hypertonic – the solution outside the bag is “hyper” meaning it is above strength. Hyper means high so the solution is high in solute, low in water.
Water will move in both directions but more will move to an area of low concentration. This will cause the cell to lose water.
Just like your potato in salt water.
More solute = less water
Hypotonic – the solution outside the bag is “hypo” meaning below strength. Hypo means below so the solution is low in solute and high in water.
Water will move in both directions but more will move inside the cell.