This is true.
Facilitated diffusion is a process by which molecules are transported across the plasma membrane with the help of membrane proteins.
It is a type of passive transport in which no energy from the cell is required for the process because a concentration gradient exists that allows movement of particles without expending cellular energy.
Materials diffuse across the cell membrane with the help of membrane proteins some of which are known as carrier proteins.
Membrane proteins are proteins that are attached to, or associated with the membrane of a cell or an organelle.
I think its B
hope it helps
Since the exosphere<span> is the topmost layer of Earth's atmosphere, the air in it is very thin as it slowly fades ... The air in the </span>exosphere has<span> multiple similarities </span>
