Controls what substances can move in and out of the cell. it also protects the cell from its surroundings.
<span>If Noam chooses a filter, it might be more effective than a screen. After using it for a while, though, he will have to replace it, which could be expensive. A screen might be less effective, but it can be cleaned instead of replaced.</span>
=> nucleus
<u>#CarryOnLearning</u> (◍•ᴗ•◍)
