Water sample from a local pond nearby

You scoop up a water sample from a local pond nearby, because you are curious about the possible microbes that might live there.  After looking at several slides that held drops of the sample, you noticed two different kinds of cells:  One kind was very small and had no separate internal structure; the other kind was much larger, and it contained several kinds of internal structures that were physically different from each other.  Please name each cell briefly describe their overall similarities and differences.

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