How are osmosis and diffusion alike?

Osmosis and diffusion are alike in a way that in both motion of molecules/water is in the same direction as of the concentration gradient.None of the above process needs ATP as energy.They are passive process.ExplanationOsmosis is the process of movement of water from high concentration of water to low concentration of water across the permeable membrane.Diffusion is the transport of materials from high concentration to low concentration.Concentration gradient means the Movement always from higher to lower concentration of materials.So in the osmosis and diffusion movement is always from high to low concentration.

Closing a ring restricts the rotation around individual car bon carbon bonds hope it will you !