This is a PowerPoint presentation on the movement of materials through membranes. Headings include: cell membrane, selective permeability, active and passive transport, diffusion, concentration, osmosis, osmotic pressure, facilitated diffusion, isotonic, hypotonic, and hypertonic solutions, endocytosis, pinocytosis, and phagocytosis. Some of the images in here are copyrighted. Their inclusion here should be fair use, but they're not covered under the Creative Commons license. Let's get them replaced with open-licensed images. This resource is part of the Developing Biology course which contains units on Microscopes; Biochemistry; Cells; Cellular Transport; DNA; Photosynthesis and Respiration; Mitosis and Meiosis; Genetics; and Evolution.


  • Science > General
  • Science > Biology

Education Levels:

  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12


student-facing cell membrane permeability active passive transport diffusion concentration osmosis osmotic pressure facilitated diffusion isotonic hypotonic hypertonic solution endocytosis pinocytosis phagocytosis



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution 3.0
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Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2013-03-09.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 0

Reviewer Comments:

This PowerPoint presentation is appropriate for high school biology classes and clearly illustrates a number of concepts involved with movement of materials across a cell membrane, including diffusion, active and passive transport, phagocytosis and more. The presentation follows a logical order of ideas, although one may want to turn the sound off, since it is punctuated by somewhat superfluous sound effects.
geeta unni
October 23, 2012
Its v well illustrated and explained

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