Write a creative paragraph describing the “thought” process of the first cells that describes how this symbiosis occurred. (Of c
ourse, there was no real thought involved, but imagine that you are a cell that encounters an interesting prokaryotic cell and tries to convince it to be ingested and help you out in some way).
Once upon a time, there was a cell. It was moving around the primordial soup trying to make it in that harsh world. All of a sudden, it encountered a small prokaryotic cell. To be honest, the cell was feeling a little lonely and it was happy to come across somebody to share the habitat with. The two cells started spending a lot of time together, just quietly coexisting. The first cell started thinking how it would be so much easier to survive if the other, small cell were to live with me. I could provide safety and shelter, and the small cell can pay me back by providing me with the energy I need for my daily metabolic processes. The cell was hesitant for a second, but then bravely said ''Hey, what do you think about symbiosis?''. And the rest is (endosymbiotic) history.
The kidneys can regulate water levels in the body; they conserve water if youare dehydrated, and they can makeurine more dilute to expel excesswater if necessary. Water is lost through the skin through evaporation from the skin surface without overt sweating and from air expelled from the lungs.
