Answer: true
Explanation: Diffusion and osmosis are both types of passive transport processes. Passive transport is a movement of molecules across a cell membrane without the use of energy, such as ATP.
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration, until a state of equilibrium is reached. This happens because molecules are in constant random motion, and they naturally move from an area of high concentration to an area of low concentration until there is no longer a concentration gradient.
Osmosis is the diffusion of water molecules across a selectively permeable membrane, from an area of high water concentration to an area of low water concentration, until equilibrium is reached. This occurs because water molecules can pass through the membrane, but other solute molecules cannot. The direction of osmosis is determined by the concentration of solutes, which affects the concentration of water.
In both diffusion and osmosis, molecules move passively from an area of high concentration to an area of low concentration until equilibrium is reached. They are similar in this sense, but osmosis specifically refers to the diffusion of water molecules across a selectively permeable membrane.