the movement of molecules across a cell membrane without energy input from a cell
the movement of molecules in a fluid or gas from a region of higher concentration to a region of lower concentration
When water molecules diffuse
when a cell has the same concentration of dissolved particles
a solution that has a higher concentration of dissolved particles than a cell
a solution that has a lower concentration of dissolved particles than a cell
the diffusion of molecules across a membrane through transport proteins
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.
NEW! Voice Recording
Click the mic to start.