For example, biochemical reactions in a cell's ... of whole organelles as these structures move within cells. Of all eukaryotic organelles, the nucleus is perhaps the most critical.

Planctomycetes challenge our concept of the bacterial cell and of a prokaryote as a cell structure type, as well as our ideas about origins of the eukaryote nucleus. Planctomycetes Are Important ...

Many eukaryotic cells exhibit shape changes, with one of the most fascinating examples being the unicellular ciliated ...