Chapter 5 Passive and Active Transport
Review-- keep in mind exams are coming up
Terms : Hide Images [1]
| the movemnt of molecules from an area of higher concentration to an area of lower concentration | ||
| difference in concentration of molecules across a distance | ||
| concentration evenly distributed across a distance | ||
| diffusion across membranes | ||
| diffusion across a membrane | ||
| direction of osmosis: diffused INTO a cell | ||
| direction of osmosis: diffused OUT OF a cell | ||
| directoin of osmosis: equal (NO movement) | ||
| the pressure exerted against the cell wall by water | ||
| cells shrink (less turgor pressure) | ||
| transfer materials (that cannot readily diffuse through membrane) through membrane | ||
| allow ions to pass into a cell shielded from phospholipid tails | ||
| cells ingest external fluid, macromolecules and large particles through this process | ||
| transport pouch of phospholipids | ||
| ingestion of fluids or solutes | ||
| ingestion of large particles/ whole cells | ||
| ingest viruses and bacteria to destroy them before harm can be done to the organism | ||
| cells release external fluid, macromolecules and large particles through this process | ||
| membranes that allow certain substances to enter but block others |