2006-10-21 05:38:18 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
because different pores allows different substances to pass through them like ions or proteins.
2006-10-21 05:42:36 · answer #1 · answered by ShaneA 3 · 0⤊ 0⤋
They aren't really pores, rather they are protein channels embedded in the cell membrane that work to get particles and molecules into and out of the cell. Each channel is specific for a type of particle/molecule. For instance, each ion type that goes through a channel uses a specific channel(s). Since ions are different in size, so are the ion pump channels in the membrane. I hope this helps.
2006-10-21 06:48:09 · answer #2 · answered by sciteach9 2 · 0⤊ 0⤋
Some cells use a commercial membrane exfoliant and conditioner, and others don't.
2006-10-21 05:40:20 · answer #3 · answered by Hate Boy! 5 · 0⤊ 2⤋
to allow different kind of stuff to go through.
God bless,
gabe
2006-10-21 06:45:38 · answer #4 · answered by gabegm1 4 · 0⤊ 0⤋