Diffusion and Osmosis animations

Dear all,

A few other links to animations that I;ve shown to you in class, in case you would like to relook at them =)

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html

http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_osmosis_works.html

Crenation in animal cells

Recall the following (the table that I asked you to copy in your textbook):

Hypotonic solution (compared to the cell)
Plant cell: Become turgid
Animal cell: Swells and burst (Lysis)

Hypertonic solution (compared to the cell)
Plant cell: Becomes plasmolysed
Animal cell: Undergoes crenation

Crenation is the process in which cell shrinks and little spikes appear on the cell surface membrane.

In the following website, drag the mouse to the right and see how crenation occurs.
The more concentrated a solution is, the more hypertonic it is, the lower the water potential, hence water leaves the cell by osmosis to enter the solution.

http://www.yteach.co.uk/page.php/resources/view_all?id=Haemolysis_osmosis_diffusion_Plasmolysis_Facilitated_diffusion_Gradient_Passive_transport_Simple_diffusion_Active_transport_page_5&from=search

Grand Opening Ceremony

Dear all,

This is an additional platform created specially for you.
I will be using this to supplement my classroom teaching (answers to questions, links etc).
Ultimately, this blog will be walking through with you, until you take the N or the big O levels.
It's really not that hard to score in this subject. Really!

Hope it also helps to simulate interest in this subject. Maybe you might consider further studies in this vibrant field of science?

Well, have fun! =)