Cell Biology

Membranes II: Passive and Active Transporters

by Nathan H Lents, Ph.D.

Further Exploration

Cells Alive!

Online galleries and pictures of cells

Cell Membranes Tutorial

Provided by the University of Arizona's Biology Project, this tutorial covers aspects of cell membranes from transport to energy requirements.


Jens Christian Skou

Jens Christian Skou


The Identification of the Sodium-Potassium Pump by Jens C. Skou

Skou's 1997 Nobel Lecture about his work.

News & Events

New look at cell membrane reveals surprising organization

A new method of looking at cells revealed some unexpected relationships among molecules within cell membranes.


Google Scholar

Google - Research database allows searching of the scholarly literature.


Cell Membrane: Just Passing Through

From PBS Learning Media, this interactive feature illustrates the the structures that make it possible for materials to pass through the cellular membranes.

Cell membrane animation

From John Kyrk, learn about a cell membrane and how it works.

Sodium-Potassium Pump Interactive

Next Generation Science Standards (NGSS)

Next Generation Science Standards: For States, By States

National Academies Press: A Framework for K-12 Science Education