Diffusion
Signal molecules bind to what?
Receptor proteins
The Diffusion of ______ through cell membranes is called osmosis.
Water
Diffusion is...
The simplest form of passive transport
Movement across a cell membrane that does not require energy on the cell's part is what?
passive transport
Water will float out of the cell when the cell is put into a ____ solution.
Hypertonic
True or False: Diffusion is an active process that requires a cell to expend a use a lot of energy?
False
what are the pores that let water pass freely during osmosis called?
Aquaporins
When Concentration of free water molecules is _____ outside the cell than inside a cell, water will diffuse into the cell.
Lower
Yes or no: will a cell burst when placed in a strong salt solution?
No
What substance is most common for osmosis?
water
What is a type of solution that causes a cell to swell?
hypotonic
where do the molecules pass through in diffusion?
directly through the phospholipid bilayer
what tonicity is ideal for plants and what tonicity is ideal for animals?
Plants: hypotonic
Animals: isotonic
Why is it dangerous for humans to drink a lot of sea water?
It sucks water out of organs, which would make the body shut down.