Prokaryotic cells reproduce asexually which makes it easier for them to multiply because all they have to do is split in half where as eukaryotic cells reproduce sexually so they have to find another cell to meet with in order to reproduce.
B.) A dog walks to a stream and drinks when it gets thirsty
would have to be your answer..
The population of bacteria growed rapidly in section B, but stayed the same rate in Section C
:)
The answer is a cellular membrane
