Macmillan Education
W.h. Freeman Publishing: Active Transport
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.
Estrella Mountain Community College
Estrella Mountain Community College: Cell Transport
Resource provides an explanation of Cell Transport. Includes many practical examples, as well as pictures. Sections include Water and Solute Movement, The Cell Membrane. Cells and Diffusion, Active and Passive Transport, Carrier-assisted...
Estrella Mountain Community College
Estrella Mountain College: Active and Passive Transport
Choose the chapter called "Active and Passive Transport" from the table of contents for explanations, comparisons, and examples of active and passive transport. This includes an illustrative diagram.
