Cells And Permeability
Why is a cell membrane selectively permeable?
A cell membrane is selectively permeable because it must only allow certain needs to enter it.
Why can't a cell membrane be impermeable?
A cell membrane cannot be impermeable because then it would not be able to take in its needs such as water and oxygen.
Why shouldn't a cell membrane be completely permeable?
A cell membrane shouldn't be completely permeable because then it would allow unneeded and harmful fluids and substances such as toxins and poisons to enter it.
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