Question

facilitated diffusion is a process that occurs in plant and animal cells. as the namepresumes, facilitated diffusion is a form of diffusion, but slightly different. thismeans that facilitated diffusion does not require any energy from the cell because itis still moving particles from an area of high concentration outside the cell to an areaof low concentration inside the cell.if a desired molecule is too large or charged, instead of it moving through a cellsmembrane, protein channels which are embedded into a cells membrane allow themolecule to pass through the protein channels.there are hundreds of different protein channels for different moleculesplease refer to the passage to help you answer thisproblem. why doesnt facilitated diffusion require energyfrom the cell?the protein channels provide the energy required.the movement is from a high concentration to a lower concentrationfacilitated diffusion does require energy.

Explanation:

Facilitated diffusion is a passive transport process. It relies on the concentration gradient (movement from high to low concentration). Protein channels only assist the movement (like providing a path) but do not supply energy. The driving force is the natural tendency of molecules to spread out (down the concentration gradient), not an energy - input like in active transport.

Answer:

Facilitated diffusion doesn't require energy because it is a passive transport process. The movement of molecules is driven by the concentration gradient (from an area of high concentration to an area of low concentration). The protein channels only facilitate (help) the movement of molecules (that are too large or charged) across the cell membrane. They do not provide the energy for the movement; the energy for the movement comes from the kinetic energy of the molecules themselves as they move down their concentration gradient.