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 structures; the other kind was much larger, and it contained several kinds of internal structures that were physically different from each other. name each cell and briefly describe their overall similarities and differences.

The cell which is  small and with no internal structures is most likely prokaryotic cell, while the larger cell with internal structures is eukaryotic cell.

Explanation:

There are two main types of cells among living organisms:

Eukaryotic cell (plants, animals, fungi) which is more compound, conntains nucleus with genetic material in it, membrane-bound organelles (mitochondria, Golgi apparatus, lysosomes etc). Because of their complex structure, the process within such cells are often more comlex then those in prokaryotes. Eukaryotic organisms are usually multicellularProkaryotic cell is simple cell found in Archea and Bacteria kingdom. It doesn't have nucleus neither membrane-bound organelles. Genetic material of these cell is located within the cytoplasm together with proteins and metabolites. First living cell was prokaryotic cell. Organisms that are prokaryotic are usually unicellular.

It allows water to resist freezing and thawing cycle.