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Stack #121371

QuestionAnswer
Homeostasis All organisms encounter great fluctuations in their enviornments (change in temperatures, water, pH, ect) that cause them to struggle continuosly to maintain a steady state.
Plasma Membrane seperates the chemicals in the call from those in it's enviornment
Impermeable when a substance can not pass through
Permeable when a substance can pass through
Selectively Permeable the membrane allows some substances through, while others cannot
Passive Transport movement of a substance through a cell's membrane without using any energy
Diffusion a net movement of particles from an area of high concentration to an area of low concentration
Equilibrium concentration of a substance is the same throughtout a space
Solute a substance that dissolves in another
Solvent the more plentiful substance that dissolves the solute
Solution the mixture of solutes and solvents
Osmosis the diffusion of water molecules through a membrane from an area of high concentration to an area of low concentration
Tonicity how the concentrations of solutes in 2 solutions compare
Isontonic solute concentration inside and outside cells is equal
Hypotonic Low in solutes, and water moves INTO cell
Hypertonic High in solutes, water moves OUT OF solutes
Created by: maddiemyster
 

 



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