https://padlet.com/lisle202/axkh601pxynh Made with no regrets, whatsoever en-us 2017-03-06 16:57:44 UTC 2025-11-16 00:59:56 UTC hello@padlet.com ss18082 https://padlet.com/lisle202/axkh601pxynh/wish/158095892
Active TransportPassive TransportDefinition | Active Transport uses ATP to pump molecules AGAINST/UP the concentration gradient. Transport occurs from a low concentration of solute to high concentration of solute. Requires cellular energy. | Movement of molecules DOWN the concentration gradient. It goes from high to low concentration, in order to maintain equilibrium in the cells. Does not require cellular energy.
Types of Transport | Endocytosis, cell membrane/sodium-potassium pump & exocytosis | Diffusion, facilitated diffusion, and osmosis.
Functions | Transports molecules through the cell membrane against the concentration gradient so more of the substance is inside the cell (i.e. a nutrient) or outside the cell (i.e. a waste) than normal. Disrupts equilibrium established by diffusion. | Maintains dynamic equilibrium of water, gases, nutrients, wastes, etc. between cells and extracellular fluid; allows for small nutrients and gases to enter/exit. No NET diffusion/osmosis after equilibrium is established.
Types of Particles Transported | proteins, ions, large cells, complex sugars. | Anything soluble (meaning able to dissolve) in lipids, small monosaccharides, water, oxygen, carbon dioxide, sex hormones, etc.
Examples | phagocytosis, pinocytosis, sodium/potassium pump, secretion of a substance into the bloodstream (process is opposite of phagocytosis & pinocytosis) | diffusion, osmosis, and facilitated diffusion.
Importance | In eukaryotic cells, amino acids, sugars and lipids need to enter the cell by protein pumps, which require active transport.These items either cannot diffuse or diffuse too slowly for survival. | It maintains equilibrium in the cell. Wastes (carbon dioxide, water, etc.) diffuse out and are excreted; nutrients and oxygen diffuse in to be used by the cell.]]> 2017-03-06 17:09:29 UTC https://padlet.com/lisle202/axkh601pxynh/wish/158095892