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."

[Free Registration/Login may be required to access all resource tools.] Energy is the ability to do work. In organisms, this can be physical work, like walking or jumping, or it can be the work used to carry out the chemical processes in...

Compare and contrast the energy generating processes of chemosynthesis and photosynthesis with this interactive resource.

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 2 of 4 in the series titled "Passive Transport."

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 3 of 4 in the series titled "Passive Transport."

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 4 of 4 in the series titled "Passive Transport."

This lesson introduces the process of passive transport, explaining that it is a form of transport that does not require energy, and moves molecules down their concentration gradient. It is 1 of 4 in the series titled "Passive Transport."

This essay by exercise physiologist Patti Finke and fitness consultant Warren Finke describes the process by which our bodies transform food energy into energy that our cells can use.