AP BIOLOGY UNIT 2: Cells - PROJECTCell Size & Shape Simulation – AP Biology Unit 2 Project | Surface Area-to-Volume Ratio | No Prep Description: Help your AP Biology students see and understand why cells are small — and how their shapes support life — with this engaging, hands-on project that explores the surface area-to-volume ratio (SA:V) in a clear, creative, and AP-aligned way. In the Cell Size & Shape Simulation, students design and build (or draw) three cell models, calculate their surf