Plasma membrane
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The natural tendency of molecules to move from higher to lower concentrations is________________.
diffusion
The outer layer of a cell that acts as a gatekeeper to a cell is the _____.
plasma membrane
What molecule forms the cell membrane?
phospholipids
A plasma membrane and a cell wall _____.
have different structures and different functions
Why do O2 and CO2 pass through the plasma membrane?
they are pumped through
The plasma membrane has a double layer of phospholipids with _____ dispersed throughout.
protein
