So just to make this sentence clear, "These are a kind of locks that potassium ions in and out of the cell, to the pumps."
should be, "these are a some kind of locks/valves that can pump potassium ions in and out of cells."
I google translated it, should have corrected it straight away but the edit function is gone now.
the damn thing is full of mistakes ... i`ll correct it and send it to Markku