Transport

=**__Transport__**=

__**Passive Transport **__ is a substance moving from a high concentration to a low concentration. Below are examples of Passive Transport:

__**Diffusion **____**:**__ Any substance moving from high concentration to low concentration. __**Osmosis **____**:**__ Water diffusing through a membrane.


 * __**Hypertonic **____**:**__ A cell in a solution that is losing water. This is due to too low a concentration of water inside the cell when compared to its environment.


 * __**Hypotonic **____**:**__ A cell in a solution that is gaining water. This is due to too high a concentration of water outside the cell when compared to its environment.


 * __**Isotonic **____**:**__ A cell in a solution that is gaining water as fast as it is losing water. The water concentration is the same inside the cell and outside in its environment.

__**Facillitated Diffusion **____**:**__ Substances moving from a high concentration to a low concentration through a protein channel in a cell membrane.

__**Active Transport **__<span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;"> is a substance moving from a low concentration to a high concentration. This process uses energy. <span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;">Below are examples of Active Transport: __**<span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;">Endocytosis **__<span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;">__**:**__ A cell surrounds a substance (usually food) and draws it into itself. __**<span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;">Exocytosis **__<span style="background-color: transparent; color: #000000; font-family: Tahoma; font-size: 16px; text-decoration: none; vertical-align: baseline;">__**:**__ A cell 'pushes' a substance out of its cell membrane.