Archaea Archaea are a domain of microscopic single-celled life distinct from bacteria and eukaryotes, notable for unusual cell chemistry, early evolutionary importance, and many species ad…
Autopoiesis: self-producing systems and biological self‑maintenance Autopoiesis Autopoiesis is the property of a system that produces and maintains its own organization. Coined for living cells, the concept has been applied to cognition, systems theory and soc…
Cell membrane (plasma membrane): structure, function and diversity Cell membrane Overview of the cell (plasma) membrane: its structure, components, transport roles, variation among organisms, and biological importance.
The Cell Concept: Principles, History, and Modern Refinements Cell theory Overview of the cell concept: core principles, 17th–19th century history, and modern molecular refinements explaining cell types, division, genetics, and exceptions like viruses.
