proteins in the plasma membrane

[c_wyatt]

can anyone give me any information that might be useful for an essay titled

"the role of proteins in the plasma membrane"

and any useful websites i could use etc?

thanks

[biostudent84]

What level essay are you working on? Middle-school, high-school, college, etc? Here's a basic list of a few different cellular biology sites to get you started:

http://www.biology-online.org/reference ... r_Biology/

[c_wyatt]

im not sure, im from england so i dont know what ages middle school etc r! im nearly 17 tho, what year would i be in in america?

thanks again

[biostudent84]

Here's a copy from my notes of a class I took. If you have trouble understanding any of it (it's college level notes), feel free to ask =)

A. Plasma Membrane: Separation
Structure:
• Phosoholipid bilayer
• Contains integral proteins and peripheral proteins
o Integral proteins—all the way through the bilayer
o Peripheral proteins—poking only through one side of bilayer
• Lipid molecules and proteins move laterally (fluid mosaic model)
Function:
• Separates cells from the environment
• Membrane proteins function as
1. Enzymes—regulate chemical reactions within the cell
2. receptors—control the uptake of molecules
3. transport proteins—carriers, channels, and pumps get molecules across membrane into cell (integral)
4. anchors—cytoskeletal proteins/extracellular matrix proteins

[thank.darwin]

http://www.stolaf.edu/people/giannini/b ... tions.html

A very nice series of short animations. Check out the membrane transport section and the lipids section. Bookmark it on your computer.

http://www.northland.cc.mn.us/biology/B ... port1.html

Some more nice animations. These are longer and have explanations.

http://www.biology.arizona.edu/cell_bio ... index.html

The Biology Project’s unit on cell membranes. This site contains an overview and a tutorial with 16 questions and answers.

http://www.cbc.umn.edu/~mwd/cell_www/ch ... brane.html

Another tutorial. Some good images. Terrible mis-use of the term osmosis.

http://physioweb.med.uvm.edu/diffusion/

Diffusion and osmosis explanations/demonstrations from Middlebury College.

http://science.nhmccd.edu/biol/osotutor.html

Two short tutorials with questions, answers, and encouragement (explanations).

http://www.bbc.co.uk/schools/gcsebitesi ... rev1.shtml

Animations and explanations. You have to click on topics on each page to get to the animations.

http://faculty.nl.edu/jste/transprt.htm#Diffusion

Outline of cell transport

http://www.emc.maricopa.edu/faculty/far ... ransp.html

Tutorial, pictures – a biology book online.

http://biology.arizona.edu/sciconn/less ... /quiz.html

An on-line quiz.

http://arnica.csustan.edu/Biol1010/memb ... branes.htm

. A concise, sum-it-up page.

http://www.uic.edu/classes/bios/bios100 ... lect07.htm

Straight-forward descriptions and some practice questions.

These should help you
- Thank.darwin

[Wojahoitz]

For the love of Darwin, someone needs to use that list of sites for something. I am not even in a biology class right now and I am tempted to go to the links somply so his effort will not go to waste.

[thank.darwin]

I didn't find them all by myself - my biology teacher gave them to me for a unit on the cell membrane.

[erythrean]

Ah, damn! I have the same exact essay question. =|

[Sepals]

can anyone give me any information that might be useful for an essay titled

"the role of proteins in the plasma membrane"

and any useful websites i could use etc?

thanks

A books which is really relevent to this topic is Principles of Biochemistry but it's really written for underguaduates. Another one that could be help is microbiology of the cell.