Answer:
1. a single substance tends to move from a area of high concentration to an area of low concentration until the concentration is equal across a space
2. endocytosis moves particles such a large molecules parts of cells and whole cells into a new cell
3. exocytosis is the process by which cells move materials from within the cell into the extraceullar fluid
4. facilitated diffusion is the process of spontaneous passive trans port of molecules and ions across a biological membrane via specific transmembraine integral proteins
5. passive transport is a type of transport that does not require energy to move substances across cell membranes
6. active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration
7. osmosis is the diffusion of water through a semipermeable membrane according to the concentration gradient of water across the membrane
