Diffusion and osmosis

A detailed Summary of Diffusion and osmosis

1. a) Bulk movement is the overall movement of a fluid. The molecules all

move in the same direction. Diffusion however is the random movement of

molecules which usually results in a fairly even distribution. In other

words the movement is not guaranteed to move in one direction but the

probability that it will move in the lower gradient is greater. Osmosis is

similar to diffusion but is differentiated by the membrane's behavior. The

cell membrane does allow water to move from higher to lower concentrations

but does not allow solutes do that. b) Water potential is the capacity of

water to move to a from a region where there is high water potential to low

water potential. This action happens without the affect of outside forces.

When outside actions due occur and they give water a high potential energy

than the water will move to the region where less potential energy is.

measure of tendency of water to move through a membrane which contains a

leave the cell membrane. The cell begins to increase with water but the

energy among the molecules. They push each other more making them less

membrane did not allow the hypertonic solution to exit because the pressure

liquids. They repel each other more resulting in faster diffusion.

solid matter. This is different from the pinocytosis where the cell

Approximate Word count = 614
Approximate Pages = 2 (250 words per page double spaced)

Category: Science

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