Here's a breakdown:
* Lack of Organelles: Unlike eukaryotes, prokaryotes lack membrane-bound organelles like mitochondria, Golgi apparatus, endoplasmic reticulum, etc. These organelles perform specific tasks in eukaryotic cells.
* Cell Membrane as Multitasker: The prokaryotic cell membrane acts as a multifunctional organelle. It's responsible for:
* Regulation of transport: Controlling what enters and exits the cell.
* Energy production: Housing the electron transport chain for ATP generation.
* Synthesis of proteins: Ribosomes are often attached to the cell membrane for protein synthesis.
* Maintaining cell shape and structure: Provides structural support.
Therefore, the lack of complex internal structures in prokaryotes means their cell membrane takes on a much more significant role in cellular processes.
