What are the mechanisms involved in diffusions of a cell?
There are 2 processes by whicha cell can get what it needs to
live. These are 1) Active transport where the cell must expend some
energy to move something into the cell (like food molecules) and
out of the cell (like waste). The other 2) diffusion/osmosis.
Diffusion is a process where things move from areas of higher
concentration to areas of lower concentration without expending any
energy, like the smell of bacon cooking in a kitchen filling an
entire house. Try dropping a drop of food coloring into a glass of
water and, without stirring, check it a few hours later. Osmosis is
the diffusion of water.