Here is a free sample preview of the paper
Cellular Diffusion
Beginning of paper
All cells have an outer protective casing, the cell membrane. It protects the cell from the outside world, but is also vital in the transfer of particles in and out of the cell. The cell membrane controls which particles can enter, and which particles can not, because it is selectively permeable. The membrane is made up of a bi-layer of lipid mole ....
Middle of paper
....nergy though, as it involves movement up the concentration gradient. This involves protein carrier molecules binding to the substance and moving it into or out of the cell, against the concentration gradient.
If a large molecule needs to be moved in or out of the cell, then two other processes, endocytosis and exocytosis are used. Endocytosis invo.... |
| Word count: 595 |
Page count: 3 |
|
Paper due soon? Running out of time and need help? If you are tired of coming across sites that charge big $$$$ per page for a paper,
TermPaperLand.com is the solution. Get immediate access to our database of over 40,000+ papers and essays for one low price
that won't break your bank account. Upon registering, you can download and print any of our papers at no additional charge. You
read right - view and print any of the 40,000+ papers you want.
| Membership Option |
Price |
Credit Card |
Online Check |
PayPal |
| 30 days (recurring) |
$19.95 |
| 90 days (recurring) |
$39.95 |
| 180 days (non-recurring) |
$69.95 |
|
|
|
