Question

what is the similarity between simple diffusion and facilitated diffusion

Answer 1

they are both types of passive transport which means they require no energy. They both work with the concentration gradient which means they go from a high concentration area to a low concentration area. The differences are simple diffusion just goes though the membrane of a cell while facilitated diffusion uses a protein channel

Answer 2

Simple diffusion: it is the process where molecules move from a area of high concentration to an are of lower concentration. There is no energy needed in simple diffusion. For example when sodium is highly concentration in a cell, it moves outside of the cell where sodium is less concentration. it takes no energy as simple diffusion is random and molecules move according to their concentration.

Facilitated diffusion: In facilitated diffusion, molecules are big and can't simply diffuse through membrane. UNLIKE simple diffusion where molecules can diffuse without energy. In facilitated diffusion, big molecules can't simply pass through membrane because of their size. Therefore, proteins called transport proteins bind to the large molecules which cannot pass through the membrane and aide in their movement across it.

I'll post a pic to help better explain it: Wait a sec.

Answer 3

this is a picture that helps you understand facilitated diffusion

Answer 4

Here is a picture to help you understand simple diffusion

Answer 5

still didn't really understand the answer :/