<span>The scientific examination of how organisms are distributed and their abundance, along with the interactions that affect these aspects. This definition includes not only the flora and fauna recognized by Haeckel but also microscopic life forms like Bacteria, Archaea, and protozoa.</span>
Prokaryotic cells: do not possess membrane-bound organelles, and are relatively small—generally under 10 μm in size.
Both types of cells: utilize ribosomes for protein synthesis and contain DNA.
Eukaryotic cells: feature a complete set of DNA located within multiple chromosomes.
Specifically, prokaryotic cells lack a nucleus and membrane-bound organelles, resulting in their ribosomes floating freely within the cell. In contrast, eukaryotic cells possess a nucleus and membrane-bound organelles. Additionally, their DNA is associated with proteins and organized into chromosomes within the nucleus.
