CK-12 Foundation
Ck 12: Life Science: Diffusion
[Free Registration/Login may be required to access all resource tools.] The process of molecules moving from an area where there are lots of molecules to an area where there are fewer molecules is known as diffusion. The diffusion of...
CK-12 Foundation
Ck 12: Biology: Facilitated Diffusion
[Free Registration/Login may be required to access all resource tools.] Describes facilitated diffusion.
PBS
Pbs: The u.s. Mexico Border a History
This site has complete information about the U.S.-Mexico border. It has an interactive timeline of important border events and a morphing map that shows changes in the border.
Libre Text
Libre Text: Wind Stress
The force exerted by the wind on the ocean surface gives rise to a vertical velocity gradient in the upper boundary layer of the ocean. Essentially, the wind adds momentum to the ocean surface which is then transported downward through...
BBC
Bbc: Gcse Bitesize: Supplying the Cell
For an organism to function, substances must move into and out of cells. Three processes contribute to this movement - diffusion, osmosis and active transport. Diffusion is the process by which useful materials and waste products move in...
Read Works
Read Works: Matter Is Everywhere!
[Free Registration/Login Required] An informational text about mass and its properties. A question sheet is available to help students build skills in reading comprehension.
Science Struck
Science Struck: Osmosis vs. Diffusion: How Are They Different?
Explains the processes of osmosis and diffusion using labeled illustrations, discusses how they occur and gives examples.
Concord Consortium
Concord Consortium: Stem Resources: Diffusion
An activity to understand how diffusion is a result of random motion and collisions of particles. With the virtual labs, explore how a drop of food coloring into a glass spreads and how perfume diffuses at different temperatures and...
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...
Texas Education Agency
Texas Gateway: Fluid Dynamics and Its Biological & Medical Applications:glossary
This is a glossary of terms and definitions used in Chapter 12: Fluid Dynamics and Its Biological & Medical Applications from the AP Physics online text.
Concord Consortium
Concord Consortium: Diffusion, Osmosis and Active Transport
This activity demonstrates diffusion, osmosis, and active transport through 12 interactive models. (Requires Java)
Other
Introductory Sociology: Culture
This page from the Del Mar College is an excellent outline of the topic; it provides a basic definition of the term, culture, as well as significant topics and a bibliography.
CK-12 Foundation
Ck 12: Chemistry Simulation: Speedy Smells
[Free Registration/Login Required] Explore how the mass of a molecule affects how quickly a smell will reach our noses.
Utah State Office of Education
Utah Science: Introducing Cells!
Get to know cells, what they create, how to identify them, and how to tell whether they belong to a plant or an animal. Several activities
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...
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...
CK-12 Foundation
Ck 12: Biology: Cell Transport and Homeostasis Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on cell transport and homeostasis.
Concord Consortium
Concord Consortium: Diffusion of a Drop
Explore the effect of temperature on diffusion.
Khan Academy
Khan Academy: Biological Adaptations: The Case of Atlantic Salmon
Practice for the MCAT by answering questions based on the given graph about biological adaptations in Atlantic Salmon.
Khan Academy
Khan Academy: Cell Membrane Questions
This study resource from Khan Academy provides practice questions for the MCAT. "Cell membrane" questions are provided on this resource.
CK-12 Foundation
Ck 12: Life Science: 2.11 Passive Transport
Explore the passive transport process of diffusion.
CK-12 Foundation
Ck 12: Life Science: 2.10 Diffusion
Understand the processes of osmosis and diffusion.
Other
Biology Simulations: Diffusion and Osmosis
This simulation can be used to study molecule movement across a semipermeable membrane.
Simon Fraser University
Chem1 Virtual Textbook: Diffusion: Random Motion With Direction
The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with diffusion along with topics such as concentration gradient and random...