Final answer:
Protocells are simple, cell-like structures with a membrane that likely gave rise to the first true cells. They are fundamental to understanding the transition from non-living to living matter and the origin of complex cell types such as prokaryotic and eukaryotic cells.
Step-by-step explanation:
Cell-like structures, complete with an outer membrane, that may have resulted from the self-assembly of macromolecules, and eventually given rise to cellular life are known as protocells. Protocells are considered to be the precursors to the first true cells, encapsulating the transition from non-living to living entities. They likely had simple membranes composed of lipids, separating their internal environment from the external world, and contained organic macromolecules like nucleic acids (RNA and DNA) that were crucial for their development into more complex cellular forms.
All living things are made of cells which are the fundamental unit of structure and function in living organisms. Cells are classified into two primary types: prokaryotic and eukaryotic. Prokaryotic cells are simpler and lack membrane-bound organelles, while eukaryotic cells have complex organelles enclosed by membranes and a defined nucleus.