Browse

2 breaks
AllBiologyComputingEarth & SpaceEconomicsEngineeringFood ScienceHistoryLanguageMathsMindMusic & SoundPhysics
Why cells stay tiny: skin grows with the square, the cell with the cube Double a cell's width and its skin grows 4 times, but the cytoplasm it must feed grows 8 times. Add diffusion, where time grows with the square of the… Biology5 min read How a leopard gets its spots: Turing's two-chemical pattern machine A leopard's spots and a zebra's stripes start out as a smooth sheet of near-identical cells. In 1952 Alan Turing showed that two interacting chemicals, one… Biology3 min read