Why are diffusion and osmosis considered to be passive processes?
Because diffusion occurs on its own and osmosis is a special case of diffusion that involves the passive transport of water, which does not require energy. Resource: __http://wiki.answers.com/Q/Why_diffusion_is_an_example_of_passive_transport__ 3. Compare and contrast passive cell transport with active cell transport. You are responsible for discussing at least 3 similarities and/or differences. Active transport uses energy to move molecules across the membrane. It may move solutes into the cell or out of the cell. It goes from a low to high concentration. Passive transport requires no energy input for movement to occur. It’s a natural movement that works with concentration gradient from a high to low concentration. 4. What questions do you still have about cell movement? During diffusion, will diffusion still occur when the concentrations are really close such as .9% salt and 1% salt? Yes it will but not as much water will diffuse. Resource: answers.yahoo.
