Terms : Hide Images
| 1999030231 | exocytosis | the movement of materials out of the cytoplasm of a cell by the fusion of vesicles with the plasma membrane | 0 | |
| 1999030232 | facilitated diffusion | the passage of a substance through a specific transport protein across a biological membrane down its concentration gradient | 1 | |
| 1999030233 | hypertonic solution | A solution in which the concentration of solutes is greater than that of the cell that resides in the solution (causes shrinking) | 2 | |
| 1999030234 | hypotonic solution | A solution in which the concentration of solutes is less than that of the cell that resides in the solution (causes swelling) | 3 | |
| 1999030235 | induced fit | the change in shape of the active site of an enzyme, caused by entry of the substrate, so that it binds more snugly to the substrate. | 4 | |
| 1999030236 | isotonic solution | a solution that, when surrounding a cell, has no effect on passage of water in or out of the cell | 5 | |
| 1999030237 | kinetic energy | the energy of motion / the energy of a mass of matter that is moving | 6 | |
| 1999030238 | noncompetitive inhibitor | a substance that reduces the activity of an enzyme without entering an active site. by binding elsewhere on the enzyme, a noncompetitive inhibitor changes the shape of the enzyme so that the active site no longer effectively catalyzes the conversion of substrate to product. | 7 | |
| 1999030239 | concentration gradient | a region along which the density of a chemical substance increases or decreases | 8 | |
| 1999030240 | diffusion | the spontaneous movement of a substance down its concentration gradient from where it is more concentrated to where it is less concentrated | 9 | |
| 1999030241 | endergonic reaction | an energy-requiring chemical reaction, which yields products with more potential energy than the reactants. | 10 | |
| 1999030242 | endocytosis | cellular uptake of molecules or particles via formation of new vesicles from the plasma membrane | 11 | |
| 1999030243 | entropy | a measure of disorder. one form is disorder is heat, which id random molecular motion | 12 | |
| 1999030244 | enzyme | a macromolecule, usually a protein, that serves as a biological catalyst, changing the rate of a chemical reaction without being consumed by the reaction | 13 | |
| 1999030245 | exergonic reaction | an energy-releasing chemical reaction in which the reactants contain more potential energy than the products | 14 | |
| 1999030246 | active site | the part of an enzyme molecule where a substrate molecule attaches; typically a pocket or groove on the enzyme's surface | 15 | |
| 1999030247 | active transport | the movement of a substance across a biological membrane against its concentration gradient; needs ATP | 16 | |
| 1999030248 | ATP | adenosine triphosphate, the main energy source for cells | 17 | |
| 1999030249 | aquaporin | a transport protein in the plasma membrane of some plant or animal cells the facilitates the diffusion of water across the membrane (osmosis) | 18 | |
| 1999030250 | cellular respiration | the aerobic harvesting of energy from food molecule; the energy-releasing chemical breakdown of food molecules | 19 | |
| 1999030251 | coenzyme | an organic molecule serving as a cofactor | 20 | |
| 1999030252 | cofactor | a nonprotein molecule or ion that is required for the proper functioning of an enzyme | 21 | |
| 1999030253 | competitive inhibitor | a substance that reduces the activity of an enzyme by binding to the enzyme's active site in place of the substrate | 22 | |
| 1999030254 | osmoregulation | the maintenance of solute concentrations and the balance of water gain and loss | 23 | |
| 1999030255 | osmosis | the diffusion of water across a selectively permeable membrane | 24 | |
| 1999030256 | passive transport | the diffusion of a substance across a biological membrane, with no use of energy | 25 | |
| 1999030257 | phagocytosis | a type of endocytosis in which the cell engulfs macromolecules, or other cells or particles into its cytoplasm; cellular "eating" | 26 | |
| 1999030258 | pinocytosis | a type of endocytosis in which the cell takes fluid and dissolved solutes into small membranous vesicles; cellular "drinking" | 27 | |
| 1999030259 | potential energy | the energy that matter possesses because of its location or arrangement | 28 | |
| 1999030260 | receptor mediated endocytosis | the movement of specific molecules into a cell by the inward budding of membranous vesicles | 29 | |
| 1999030261 | substrate | A part, substance, or element that lies beneath and supports another part, substance, or element; the reactant in reactions catalyzed by enzymes | 30 |
