When a plasma membrane has a pressure of zero, passive transport STOPS
IS THAT TRUE OR FALSE? I'M NOT TOO SURE.
Since this is not my area of expertise, I searched Google under the key words "'plasma membrane' transport zero" to get these possible sources:
http://books.google.com/books?id=A3jgW0ltVRQC&pg=PA41&lpg=PA41&dq=%22plasma+membrane%22+transport+zero&source=web&ots=xclue4uCRk&sig=9SpobRhycBo-QzNrLAxmf3MPWg4
http://www.jbc.org/cgi/reprint/258/6/3608
http://jxb.oxfordjournals.org/cgi/content/abstract/45/2/245
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.
That statement is false. When a plasma membrane has a pressure of zero, passive transport does not stop. Passive transport refers to the movement of molecules or ions across a biological membrane without the use of energy. There are two main types of passive transport: diffusion and osmosis.
Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. This occurs due to the random motion of molecules, and it continues until an equilibrium is reached. The pressure of the membrane does not affect the process of diffusion.
Osmosis is a specific type of diffusion that involves the movement of water molecules across a selectively permeable membrane. The net movement of water is from an area of lower solute concentration to an area of higher solute concentration. Again, the pressure of the membrane does not affect the process of osmosis.
So, to summarize, passive transport, including diffusion and osmosis, does not depend on the pressure of the plasma membrane.