Covers general terms for cellular transport for AP Biology.
5930445780 | Selectively Permeable | a property of cell membranes that allows some substances to pass through, while others cannot | ![]() | 0 |
5930445781 | Phospholipid Bilayer | double layer of phospholipids that makes up plasma and organelle membranes | ![]() | 1 |
5930445782 | Integral Proteins | penetrate the hydrophobic core and often span the membrane | ![]() | 2 |
5930445783 | Peripheral Proteins | Bound to the inner or outer surfaces of the membrane and are easily separated from it. | ![]() | 3 |
5930445784 | Glycoproteins | proteins that have carbohydrates covalently bonded to them | ![]() | 4 |
5930445785 | Glycolipids | lipid that have carbohydrates covalently bonded to them | ![]() | 5 |
5930445786 | Passive Transport | transport that does not require the cell to expend energy (high to low concentration) | ![]() | 6 |
5930445787 | Active Transport | energy-requiring process where a substance moves against the concentration gradient (low to high concentration) | ![]() | 7 |
5930445788 | Diffusion | net movement of a substance down a concentration gradient (high to low) | ![]() | 8 |
5930445789 | Facilitated Diffusion | diffusion of solutes across a membrane, with the help of transport proteins | ![]() | 9 |
5930445790 | Osmosis | diffusion of water across a selectively permeable membrane | ![]() | 10 |
5930445791 | Hypertonic | solute concentration is greater than inside the cell, cell loses water; plant cells plasmolyze, animal cells crenate | ![]() | 11 |
5930445792 | Hypotonic | solute concentrations in less than inside the cell, cell gains water; animal cells lyse, plant cells have ideal turgor pressure | ![]() | 12 |
5930445793 | Isotonic | solute concentrations are the same on both sides of the membrane, cell does not gain or lose water; ideal condition for animal cells | ![]() | 13 |
5930445794 | Sodium-Potassium Pump | actively pumps Na+ ions out and K+ ions in, 3 Na leave for every 2 K that enter | ![]() | 14 |
5930445795 | Proton Pump | pumps (H+ ions) out of the cell, creating a proton gradient, protons diffuse back into the cell, which powers ATP production | ![]() | 15 |
5930445796 | Cotransport | The coupling of the "downhill" diffusion of one substance to the "uphill" transport of another against its own concentration gradient. | ![]() | 16 |
5930445797 | Exocytosis | exporting macromolecules by fusion of vesicles with the plasma membrane | ![]() | 17 |
5930445798 | Endocytosis | importing macromolecules by forming vesicles derived from plasma membrane | ![]() | 18 |
5930445799 | Phagocytosis | part of the cell membrane engulfs large particles or entire cells (cell eating) | ![]() | 19 |
5930445800 | Pinocytosis | part of the cell membrane engulfs small dissolved substances or fluid droplets in vesicles (cell drinking) | ![]() | 20 |
5930445801 | Receptor-Mediated Endocytosis | importing of specific macromolecules by receptor proteins bind to a specific substance which triggers the inward budding of vesicles formed from coated pits | ![]() | 21 |
5930445802 | Ligands | molecule that binds to the specific receptor site on another molecule | ![]() | 22 |
5930445803 | Clathrin Coated Pits | areas of the plasma membrane containing receptors that will cause endocytosis when the appropriate ligand binds | ![]() | 23 |
5930445804 | Fluid Mosaic Model | states that the membrane is a fluid structure with a mosaic of various proteins embedded in it | 24 | |
5930445805 | Transport Proteins | allow passage of hydrophilic substances across the membrane | ![]() | 25 |
5930445806 | Concentration Gradient | a difference in concentration across a distance | ![]() | 26 |
5930445807 | Turgor Pressure | the pressure that is exerted on the inside of cell walls, caused by the movement of water into the cell | ![]() | 27 |
5930445808 | Gated Channels | protein channel in a cell membrane that opens or closes in response to a particular stimulus | ![]() | 28 |
5930445809 | Aquaporins | facilitates the passage of water into a cell | ![]() | 29 |
5930445810 | plasmolysis | As a plant cell loses water, it shrivels, and its plasma membrane pulls away from the cell wall | ![]() | 30 |
5930445811 | crenation | Condition wherein animal cells decrease in size, shrivel and wrinkle, and are no longer functional when in a hypertonic solution | ![]() | 31 |
5930445812 | cholesterol | A large, ring shaped lipid found in cell membranes. Its presence helps to maintain flexibility and fluidity in the membrane. | ![]() | 32 |