Create an account
the amount of molecules in a specified volume or area, amount of a substance in relation to another substance
the concentrations of molecules at various points between the high and the low areas
process by which molecules move from areas of high concentration to areas of low concentration until the concentration is the same everywhere
when concentration of solutes outside cell is lower than the concentration in cytoplasm, water diffuses in, cell swells, can result in cytolysis, higher turgor pressure in plants, well-watered
when concentration of solutes outside the cell is higher than the concentration in cytoplasm, water diffuses out, cell shrinks (animal), loss of turgor pressure in plants, can result in plasmolysis
when the cell's contents shrink away from the cell wall, causing plants to wilt, loss of turgor pressure (hypertonic environment)
process used for large or non-soluble molecules that cannot diffuse rapidly through the cell membrane, even in the presence of a concentration gradient, use a carrier protein to move across the cell membrane
energy in the form of ATP is used to move substances through the transport proteins against their concentration gradient
process where cells take materials in through the cell membrane inside vesicles which are membrane-bound organelles
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
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.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together