Useful Websites
- Lab Books: Diffusion, Osmosis, and the Nernst Equation
- This site has great animations of various concentration gradients and explains the processes of diffusion and osmosis. You can change the concentration gradient and see the results in an interactive learning experience.
- The Cell Membrane
- These Web pages give a comprehensive review of membrane structure and function, cytochemistry, freeze-fracture studies, junctions, and microvilli.
- Cells Alive!
- Look around: You will find a considerable amount of information concerning cells.
- Endocytosis
- A brief discussion of phagocytosis, pinocytosis, and receptor-mediated endocytosis.
- Cell Membranes
- A brief discussion of the structure of the plasma membrane.
- Ask The Experts: Biology
- A discussion of how osmoregulation allows fish to live in saltwater and freshwater.
- Osmosis and Membrane Permeability Tutorials
- Quiz yourself on your knowledge of the process of osmosis.
- Diffusion, Dialysis, and Osmosis Tutorial
- This site gives you an opportunity to quiz yourself on your knowledge of passive transport processes.
- Membrane Transport
- Shockwave animations illustrating passive and active transport processes.
- Transport in and out of Cells
- This chapter of M. J. Farabee's excellent online text discusses the structure of the plasma membrane and the movement of substances across the plasma membrane.
- Familial Hypercholesterolemia
- A defect relating to receptor-mediated endocytosis is responsible for an inherited version of high cholesterol levels.
