Simple diffusion and osmosis are both forms of passive transport and require none of the cell's ATP energy.

Does osmosis require energy from ATP?

The animation shows that movement occurs until the concentration of the molecules reaches equilibrium. Osmosis is the diffusion of water through a semi-permeable membrane. ... This movement is not spontaneous and requires ATP energy and a protein carrier.

Does osmosis require energy?

Both diffusion and osmosis are passive transport processes, which means they do not require any input of extra energy to occur. In both diffusion and osmosis, particles move from an area of higher concentration to one of lower concentration.