Department of Defense
Do Dea: Biology: Unit 3: Cell Structure
In this third unit of a Biology course, students learn about cells and cell structure. They compare prokaryotic and eukaryotic cells and learn about the specialized structures in a cell and what their functions are. They will also learn...
National Health Museum
Access Excellence: Description of "Cell Membrane Surface Area Demos"
In this hands on site, you will find several simple, fun, cheap, and educational surface area demonstrations to use when studying cell membranes.
Georgia State University
Georgia State University: Hyper Physics: Membrane Transport
This technical site provides an in depth look at membrane transport by clearly explaining the processes of diffusion and osmosis. Links are provided to clarify terminology.
Biology Pages
Kimball's Biology Pages: Transport Across Cell Membranes
This site has information on how facilitated diffusion of ions takes place through proteins, or assemblies of proteins, embedded in the plasma membrane. Includes a helpful diagram.
CK-12 Foundation
Ck 12: Life Science: 2.9 Cell Transport
Explore the process of cell transport across a cell membrane.
CK-12 Foundation
Ck 12: Life Science: Passive Transport
[Free Registration/Login may be required to access all resource tools.] The cell membrane is semi-permeable. Sometimes molecules need the help of special transport proteins or an input of energy to help them move across it. When an input...
Other
Johnson County Community College: Cell Membrane and Transport Mechanisms
Brief overview of the transport mechanisms involved in cell transport.
BioMan Biology
Bio Man Biology: Cell Defense: The Plasma Membrane
Learn all about cell membranes in this game. Build a plasma membrane and learn about the membrane's functions. Identify the parts of a membrane, and learn how diffusion, transport, and osmosis work in cells. Includes a worksheet that can...
CK-12 Foundation
Ck 12: Biology: Membrane Proteins
[Free Registration/Login may be required to access all resource tools.] Describes proteins in the plasma membrane.
Massachusetts Institute of Technology
Mit: Open Course Ware: Courses: Biology: Cell Biology
College-level course highlighting the biology of cells of higher organisms. Course topics include cellular membranes and organelles; cell growth and oncogenic transformation; transport, receptors, and cell signaling; the cytoskeleton,...
Science Education Resource Center at Carleton College
Serc: How Do Different Liquids Affect Movement of Materials Across a Membrane?
Young scholars investigate the movement of different materials across the cell membrane of a raw egg once the egg shell has been dissolved in vinegar.
BiologyWise
Biology Wise: Active Transport Process
Explains what happens during the active transport process where substances are moved across a cell membrane.
Khan Academy
Khan Academy: Phagocytosis
Have you ever wondered how a virus or other infectious agent invades a cell to start an infection? Some objects, like viruses, bacteria, or other particles are too large to transport through the plasma membrane. So, cells engulf the...
Colorado State University
Colorado State University: Aquaporins: Water Channels
Learn about water channels called aquaporins that allow water to cross the cell membrane.
Khan Academy
Khan Academy: Structure of the Plasma Membrane
Article takes a look at the different components (protein, lipid, cholesterol, and carbohydrate) of the plasma membrane, examining their roles, their diversity, and how they work together to make a secure boundary around the cell.
Open Curriculum
Open Curriculum: Cell Transport and Homeostasis
Students will be able to identify two ways that molecules and ions cross the plasma membrane.
Sophia Learning
Sophia: Passive Transport: Lesson 2
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."
McGraw Hill
Glencoe Biology: Cellular Transport: Self Check Quiz
Answer five multiple-choice quiz questions about the different types of cellular transport.
City University of New York
The World of Cells: Endo and Exocytosis
The two processes are compared on a brief essay. Use this for an introduction or general review material.
City University of New York
The World of Cells: Osmosis
This definition and explanation osmosis shows how water diffuses from regions where it is in high concentration to regions where it is in low concentration.
Other
Biology Mad: Getting in and Out of Cells [Pdf]
This seven-page Biology course handout gives a detailed explanation, accompanied by many illustrations, of the various processes by which substances travel across the membranes of cells.
Science Education Resource Center at Carleton College
Serc: Diffusion Demonstration
An interactive demonstration where students make observations of the process of diffusion. Students draw and record observations, make predictions, and make comparisons between what they're observing and how a cell membrane works.
Khan Academy
Khan Academy: The Endomembrane System
Article looks at the structure and function of the different parts of the endomembrane system, how proteins, lipids, and vesicles are transported between these parts, and how this activity keeps the cell running smoothly.
Curated OER
Passive Transport in and Out of Cells
Diagram showing how passive transport works across a cell membrane.