7th grade science test for 1-10-19 - - - kevin

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Terms in this set (...)

Osmosis
The movement of water molecules to an area of high solute concentration through a semipermeable membrane
Diffusion
The movement of substances from a area of high concentration to an are of low concentration through a semipermeable membrane
Facilitated diffusion
Substances move in and out of a cell with the help if transport proteins; this happens because some molecules are just too big and need help
Exocytosis
When the membrane of the vesicle fuses with the cells membrane and the vesicles contents are released outside of the cell; EXIT
Endocytosis
When a substance is taken into a cell by surrounding it with a cell membrane forming a sphere called a vesicle; Coming IN, enter