<prompt> Transport of molecules in simple diffusion is not determined by:ATP usageSize of moleculeLipid solubilityNumber of channels  <response>: Ref: Pal GK. Transport across Cel! membrane. In: Textbook of medical physiology. 2 ed. Abuja publishing house. 2011: 4: 32,33.Explanation:Permeability of substances across the membrane is decided by1. Lipid - solubility2. Molecular size3. Charge of the molecule4. Temperature5. Distribution of channels in the membrane6. Pressure gradientSimple and passive diffusion are passive transport and energy is not do not require utilization of metabolic energy ATP 