PLEASE HELP ME!!!!!!!!!!!!
Diffusion does not require any addition of ____________ to the molecules, which already have energy in their ____________.Facilitated diffusion is diffusion across a membrane that is aided by transport ____________ . This makes the diffusion ____________ than it would otherwise be.
One form of transport protein is called a channel ____________
Just like a ____________ lets you get into a building or a room, channel proteins can let some ____________ get across a membrane.
