This lesson introduces the process of active transport, explaining that it is a form of transport that requires energy, and moves molecules against their concentration gradient. It is 2 of 4 in the series titled "Active Transport."

This lesson introduces the process of active transport, explaining that it is a form of transport that requires energy, and moves molecules against their concentration gradient. It is 4 of 4 in the series titled "Active Transport."

This lesson introduces the process of active transport, explaining that it is a form of transport that requires energy, and moves molecules against their concentration gradient. It is 1 of 4 in the series titled "Active Transport."

Students compare and contrast passive and active transport by playing a game to model this phenomenon. Movement through cell membranes is also modeled, as well as the structure and movement typical of the fluid mosaic model of the cell...

This lesson explains the process of facilitated diffusion, explaining that it is a passive form of transport which uses protein channels to move larger molecules down their concentration gradient. It is 3 of 9 in the series titled...

This lesson explains the process of facilitated diffusion, explaining that it is a passive form of transport which uses protein channels to move larger molecules down their concentration gradient. It is 4 of 9 in the series titled...

This lesson explains the process of facilitated diffusion, explaining that it is a passive form of transport which uses protein channels to move larger molecules down their concentration gradient. It is 5 of 9 in the series titled...

This lesson explains the process of facilitated diffusion, explaining that it is a passive form of transport which uses protein channels to move larger molecules down their concentration gradient. It is 1 of 9 in the series titled...

Explains how neurons work during the formation and transmission of brain signals.

For an organism to function, substances must move into and out of cells. Three processes contribute to this movement - diffusion, osmosis and active transport. Diffusion is the process by which useful materials and waste products move in...

[Free Registration/Login may be required to access all resource tools.] During active transport, molecules move from an area of low concentration to an area of high concentration. This is the opposite of diffusion, and these molecules...

Moving materials across the cell membrane sometimes requires energy, called active transport. This tutorial covers both primary and secondary active transport with good clear animations.

The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with diffusion along with topics such as concentration gradient and random...

[Free Registration/Login may be required to access all resource tools.] Introduction to active transport.