Simple diffusion and facilitated diffusion both occur without energy input.
WHAT IS CELLULAR TRANSPORT:
Cellular transport is the process whereby materials are moved into and out of the cell of living organisms.
- Simple diffusion is a type of cellular transport in which substances move from a region of higher concentration to a region of lower concentration until there is even distribution.
- Facilitated diffusion is another type of diffusion which involves the use of transport proteins to move substances.
Therefore, this means that simple diffusion and facilitated diffusion both occur without energy input.
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