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Diffusion

A & P Lab USM

WordDefinitionFactorsSubstances
Crenate to shrink in size
Hemolysis process of a blood cell rupturing in hypotonic solution
Tonicity effect of solutions on cell
Passive Transport no energy needed
Active Transport energy needed
Brownian Movement motion that causes them to bump into adjacent molecules
Kinetic Energy supplied by Brownian movement needed for passive transport mechanisms
Concentraction Gradient unequally distributed this will exist and one region will have a greater concentration of the substance than other regions
Quilibrium substance will diffuse until an equal distribution occurs
Solution result of dissolving a solute
Solute ex. salt
Solvent ex. water
Osmotic Pressure greater the solute concentration the greater the osmotic pressure f the solution
Reverse Osmosis a process in which the pressure applied to arm b is greater than the osmotic pressure
Dialysis passive process similar to osmosis except that, besides water, small solute particles can pass through a selectively permeable membrane
Kidney dialysis remove wastes from the blood of the patient whose kidneys are not functioning properly
Isontonic solution has the same solute concentraations as a cell
Hypertonic solution containing more solute (and therefore less solvent) than a cell; cell crenate
Isontonic solution has the same solute concentraations as a cell
Hypertonic solution containing more solute (and therefore less solvent) than a cell; cell crenate
Pinocytosis cell invaginates a small area of the cell membrane and traps not the large particles of phagocytois by rather small particles and fluid
Exocytosis active transport of materials out of the cell
Diffusion molecular movement of solutes direction determined by relative concentrations size of gradient, size of molecules, change, lipid solubility temp. small inorganic ions, lipid soluble materials
Osmosis movement of water molecules concenttration gradient, opposing osmotic of hydrostatic pressure water only (all cells)
Filtration movement of water, usually with solute, by hydrostatic pressure requires filtration membrane amunt of pressure, size of pores in filter water and small ions (blood vessels)
Facilitated diffusion carrier proteins passively transport solutes across a membrane down a concentration gradient size of gradient, temp., availability of carrier protein glucose and amino acids
Active Transport carrier proteins actively transport solutes across a membrane regardles of any concentration gradients availability of carrier, substrate, and ATP NA+, K+, Ca2+, Mg2+
Secondary Active Transport carrier proteins passively transport two solutes, with one moving down its concentration gradient availability of carrier,substrates, and ATP glucose and amino acids
Endocytosis creation of membranous vesicles containing fluid or solid material stimulus and mechanics incompletely understood, requires ATP fluids, nutrients, debris, pathogens
Exocytosis fusion of vesicles, containing fluids and/or solids within the cell membrane stimulus and mechanics incompletly understood, requires ATP fluids, debris
Hypotonic solution containing less solute than a cell; cells lyse
Phagocytosis movement of large particles into the cell
Created by: amandahamilton7