Answer:
I would say they have moving electric and magnetic fields.
Explanation:
<span>Transcript of A Cell is like a Factory. The cytoplasm contains the organelles, just likehow the factory floor contains all the machines and workers. The ER is where the ribosomes do there work to create proteins. ... The cell membrane regulates what enters and leaves the cell, similar to factories shipping department.</span><span>Sep 23, 2014</span>
I'm not too sure which one of these two but its either A or C
Carrier proteins are the proteins in active transport
