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Bio-report
Essay specific features
Written by:
Pam H
Date added:
October 8, 2015
Level:
Grade:
A
No of pages / words:
2 / 534
Was viewed:
3913 times
Rating of current essay:
Essay content:
For example a red blood cell is placed into a isotonic solution which means both the solution and the cell have the same concentration the net movement of water is zero, water however does move freely in and out of the cell to maintain the balance.
b.Active Transport
In active transport a cell moves materials from an area of low concentration to an area of high concentration, this process is the opposite of osmosis or diffusion...
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Active transport requires energy because it is moving against the concentration gradient. In active transport the cell uses ATP to remove unwanted materials and to receive needed ones. For example a muscle cell wants potassium and wants to get rid of a sodium, the cell releases ATP to the pump proteins which results in the cell ejecting the sodium ion and at the same time another receptor cell accepts a potassium which is then released into the cell and the process is repeated until the cell is finished...
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