EntityQ1156614· pop 27· linked from 117 articlespassive transportSign in to savemembrane transport that occurs down an electrochemical gradient and does not require energyConnectionsactive transportEntitypinocytosisEntityFick's laws of diffusionEntityoxygenEntityenergyEntityliverEntitylungEntitymoleculeEntityproteinEntityInternational Standard Book NumberEntitycarbon dioxideEntitycirculatory systemEntitylipidEntitypressureEntityglucoseEntitydigital object identifierEntityInternational Standard Serial NumberEntityentropyEntitydiffusionEntityplasma membraneEntityCategoriesCell biologyCellular processesMembrane biologyPhysiologyTransport phenomena