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en.wikipedia.org/wiki/Active_transport

Active transport is the movement of molecules across a [natemembrane]] from a region of their lower concentration to a region of their higher concentration—in ...

www.khanacademy.org/science/biology/membranes-and-transport/active-transport/a/active-transport

Electrochemical gradients and the membrane potential. Primary and secondary active transport. Na+/K+ pump.

www.khanacademy.org/test-prep/mcat/cells/transport-across-a-cell-membrane/a/passive-transport-and-active-transport-across-a-cell-membrane-article

Read and learn for free about the following article: Passive transport and active transport across a cell membrane article.

www.biology4kids.com/files/cell2_activetran.html

Biology4Kids.com! This tutorial introduces active transport in cells. Other sections include plants, animal systems, vertebrates, and microorganisms.

www.ask.com/youtube?q=Active+Transport&v=2-icEADP0J4
Sep 22, 2014 ... Learn about the three types of active transport in this video.

www.biology-online.org/dictionary/Active_transport

Aug 27, 2017 ... Active transport is a type of cellular transport. In contrast to passive transport, the active transport involves the movement of a substance (e.g. ...

courses.lumenlearning.com/biology1/chapter/active-transport

Active transport mechanisms require the use of the cell's energy, usually in the form of adenosine triphosphate (ATP). If a substance must move into the cell ...

www.brainpop.com/science/cellularlifeandgenetics/activetransport

How do substances get in and out of a cell? In this BrainPOP movie, Tim and Moby introduce you to the concept of active transport. Find out which substances  ...

biologydictionary.net/active-transport

Active transport requires energy. It is most commonly accomplished by having a transport protein which changes shape when it binds with the cell's “fuel,” a ...