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Homeostasis 1a

Biology 1a

QuestionAnswer
Isotonic When the concentration of ionic solution is equal, water will not move, it is in equilibrium
Hypertonic Solution with higher solute concentration, water will flow into this solution
Hypotonic Solution with a lower solute concentration, water will flow from this solution to the hypertonic one
Semi-permeable membrane A membrane that allows certain things to penetrate it but not others
Phospholipid Hydrophilic head and hydrophobic tails, make up the cell membrane
Hydrophilic mixes with water, polar
Hydrophobic Does NOT mix with water, non-polar
Fluid-mosaic model The description of the cell membrane's fluid mobility
Endocytosis ENDO=INcell takes in materials from the outside by engulfing and fusing them with its plasma membrane.
Exocytosis EXO=OUTCell releases materials to the outside by discharging them as vesicles passing through the cell membrane
Receptor Protein Protein on surface of cell that binds substrates
Transport Protein Protein that helps to transport things in and out of the cell
Marker Protein Protein that allows things to recognize the cell, like a name tag
Simple Diffusion When substances go right through the cell membrane with no use of energy, ex: CO2, O2
Facilitated Diffusion When things go through a transport protein without using Energy, substances move from higher concentrations to lower concentrations
Osmosis Simple diffusion BUT only for water. Water moves in order to equalize ionic solutions
Active transport Uses ATP to transport things in and out of the cell, subtances to go from area of low concentration to areas of high concentration
What is homeostasis? The ability to maintain balance
Created by: latiffeamado
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