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.
Bryn Mawr College
Serendip: Diffusion Across a Selectively Permeable Membrane
Brief text summary of what students learn in the Diffusion across a Selectively Permeable Membrane lab, along with links to download Student Handouts and Teacher Preparation Notes in PDF or Word formats. Main teaching points include...
Bio Topics
Bio Topics: How Substances Get Into (And Out Of) Cells
Understand the processes that allow substances to enter and exit a cell with this interactive online worksheet. Site discusses both diffusion and osmosis.
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.
BiologyWise
Biology Wise: Fluid Mosaic Model
The fluid mosaic model provides an explanation of the structure of biological membranes. It explains why a membrane can perform all of its functions, e.g., permeability and adhesion. This resource describes the main components of a cell...
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...
CK-12 Foundation
Ck 12: Biology: Diffusion
[Free Registration/Login may be required to access all resource tools.] Describes passive transport and diffusion.
Sophia Learning
Sophia: Osmosis: Lesson 2
This lesson explains the process of osmosis. It explains how osmosis is a passive form of transport, used to move water molecules across a semi-permeable membrane, down their concentration gradient. It is 2 of 8 in the series titled...
Sophia Learning
Sophia: Osmosis: Lesson 1
This lesson explains the process of osmosis. It explains how osmosis is a passive form of transport, used to move water molecules across a semi-permeable membrane, down their concentration gradient. It is 1 of 8 in the series titled...
Alabama Learning Exchange
Alex: Rubber Egg Diffusion
This lab will illustrate diffusion and osmosis through a semi-permeable membrane. A chicken egg will be used as the model cell, because the yolk is actually a single large cell. The surrounding egg white, or albumin, contains water and...
City University of New York
Brooklyn College: Osmosis Interactive Activity
Great activity with clear background information. Try out the lab using osmosis to calculate molecular weight.
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."
Other
Fundamentals of Reverse Osmosis
This site provides a basic definition of reverse osmosis, with a bit of a slant on why water pretreatment is important.
Other
Reverse Osmosis and Osmotic Pressure What They Are
This site gives a good explanation of osmosis and reverse osmosis. Also includes a scientific diagram of the process.
Curated OER
Reverse Osmosis and Osmotic Pressure What They Are
This site gives a good explanation of osmosis and reverse osmosis. Also includes a scientific diagram of the process.