Unit 2: Cell Structure and FunctionAP BiologyOverviewCell structure and compartmentalizationCell size and the surface area-to-volume ratioThe fluid mosaic membraneMembrane transportTonicity and osmoregulationVocabularyUnit 2 topicsUnit 2 overview2.1Cell Structure: Subcellular Components2.2Cell Structure and Function2.3Cell Size2.4Plasma Membranes2.5Membrane Permeability2.6Membrane Transport2.7Facilitated Diffusion2.8Tonicity and Osmoregulation← Previous1.7 Comparing Biological MacromoleculesNext →2.1 Cell Structure: Subcellular ComponentsPractice AP Biology questions →