Summary
This section provides an extensive overview of cell structure and function, highlighting the universal features that all cells share—such as the plasma membrane, cytoplasm, and DNA—while also detailing the differences between prokaryotic and eukaryotic cells. Special emphasis is given to how structural designs, like the surface-to-volume ratio and compartmentalization by organelles, contribute to cellular efficiency and functionality. Additionally, the section examines the specialized systems (endomembrane system, mitochondria, plastids, cytoskeleton, and cell junctions) that enable cells to interact with their environment and perform complex tasks, thus forming the basis of life.