Class: 6

Date: march: Tuesday 02/10

Item: membrane transport

Membrane transport: it is entry and exit of nutrients thought of the membrane by pores or proteins.

Passive transport: The substances entry and exit without energy spend

Active transport: Entry and exit of nutrients and waste with energy Spend.

Passive transport:

the cell you want to find a balance between the concentration of salts internally and externally, to make this happen equilibrium enters the cell and removes ions.

Concentration gradient: the movement of ions according to the concentration of salts internally and externally.

By extreme conditions when concentrations as the cell must make an effort to enter on or remove ions. there are two states called plasmolysis and turgor.

Plasmolysis: when there is a greater concentration of salts or ions inside the cell and must work to remove them to the point that it loses all its water and plasmolisa and still not finish to balance out the salts.

Turgor: when there are many salts or ions and the cell has to enter them and not stand up and explodes.

date sábado, 6 de marzo de 2010

0 comentarios to “TRANSPORT MEMBRANE”

Leave a Reply: