Respuesta :
Answer:
In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.
Explanation: so it is
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- When the process required the use of membrane proteins are:
Facilitated diffusion
- According to the cells, when some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly.
- Although Facilitated diffusion is that the passive movement of molecules across the cell wall via the help of a membrane protein.
- When it's utilized by molecules that are unable to freely cross the phospholipid bilayer
- Thus, while others must suffer membrane proteins during a process called facilitated diffusion.
Find out more information about "facilitated diffusion" :
https://brainly.com/question/13846065
