K12 Reader
5th Grade Master Spelling List
Here's a spelling program that includes 36 lists of 21 words and 20 suggestions for weekly activities. Each list includes common and proper nouns, sight words, academic vocabulary, and words built on a specific Greek roots.
BiologyWise
Biology Wise: The Structure and Functions of the Cell Membrane
This resource describes the structure and functions of the cell membrane.
Ohio State University
Ohio State University: Cell Membranes
Diagrams and animations help you understand the basics of cell membrane structure and function.
University of Hamburg
University of Hamburg: Membranes: Diffusion, Permeability, Osmosis, Turgor, Active and Passive Transport and Transport
This cellular biology page presents extensive detail on the chemical nature of the cell membrane. Using the Chime plug-in, students can manipulate and study models of the membrane.
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.
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...
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.
BiologyWise
Biology Wise: What Is Facilitated Diffusion?
Explains the process of facilitated diffusion which allows selective movement of materials across the cellular membrane.
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.
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.
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.
Khan Academy
Khan Academy: Osmosis and Tonicity
Provides an overview of osmosis and tonicity and looks at how osmosis works, as well as the role it plays in the water balance of cells. Describes hypertonic, isotonic, and hypotonic solutions and their effect on cells.