“We make a living by what we get, but we make a life by what we give.” – Winston Churchill
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Monday, December 23, 2013
Selective Permeability of Membranes
The protein is allowing solute molecules to enter the cell.
Ions, such as hydrogen ions, and hydrophilic molecules, such as water and glucose, cannot rapidly pass directly through the phospholipids of a plasma membrane. To move rapidly through the membrane, they must pass through membrane transport proteins.