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Study for science
| Question | Answer |
|---|---|
| Prokaryotic | a unicellular organism that lacks a membrane-bound nucleus mitochondria, or any other membrane-bound organelle. |
| Eukaryotic | any organism whose cells contain a nucleus and other organelles enclosed within membranes. |
| Organelles | any of a number of organized or specialized structures within a living cell. |
| Cell Theory | the properties of cells. |
| Selectively Permeable | allows certain molecules or ions to pass through it by means of active or passive transport. |
| Phospholipid Bilayer | A thin polar membrane made by two membranes of lipids |
| Passive Transport | Movement of biomolocules and other atomic substances |
| Concentration Gradient | the process of particles (solutes) move through a gas or a solution from an area with a higher number of particles to an area with a lower number of particles. |
| Diffusion | a region in which they are in higher concentration to regions of lower concentration. |
| Equilibrium | The state in which the concentrations of the diffusing substance in the two compartments are the same or become equal. |
| Osmosis | molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one |
| Hypotonic | having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid |
| Isotonic | denoting or relating to a solution having the same osmotic pressure as some other solution |
| Hypertonic | having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid |
| Facilitated Diffusion | the process of spontaneous passive transport of molecules or ions across a cell's membrane via specific transmembrane integral proteins |
| Active Transport | the movement of ions or molecules across a cell membrane into a region of higher concentration |
| Membrane Pore | any of numerous structures with complex openings in a nuclear membrane which allow passage of molecules between the nucleus and surrounding cytoplasm |