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Cellular Transport Flashcards

Terms related to passive & acitive transport

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4971326686DiffusionMovement of particles or molecules from an area of high concentration to an area of low concentration0
4971326687OsmosisDiffusion of water across a selectively permeable membrane1
4971326688Selectively permeable membraneA membrane that allows certain materials to pass through, but not others2
4971326689-tonic (suffix)A solution. A solution is when you have a solute (solid) mixed with a solvent (liquid).3
4971326690EquilibriumThe condition that exists in systems when there is a relatively equal distribution of a particular molecule4
4971326691HypertonicA solution that has a higher concentration of solutes than another.5
4971326692HypotonicA solution that has a lower concentration of solutes than another.6
4971326693IsotonicTwo solutions that have an equal concentration of solutes.7
4971326694Solutesubstance that is dissolved in a solution8
4971326695Solventthe liquid that contains the dissolved solute in a solution.9
4971326696Cell Membraneregulates and controls what enters or leaves the cell10
4971326697Facilitated DiffusionUse of carrier PROTEINS for diffusion, does not require energy for a molecule to travel across the membrane Moves molecules from high to low solute concentration11
4971326698Active Transportmovement of molecules or ion into or out of the cell against its concentration gradient (from low to high) and requires an input of energy.12
4971326699EndocytosisMovement of substances into the cell by creating a new vacuole at the cell membrane. Requires energy.13
4971326700ExocytosisMovement of substances out of a cell by merging a vacuole with the cell membrane. Requires energy.14
4971326701Hypertonicthe left side is _____ compared to the right side.15
4971326702HypotonicThe right side is _____ compared to the left side.16
4971326703right, left, osmosisWater will move from the _____ to the _____ by _____.17
4971326704HypotonicThe left side is _____ compared to the right side.18
4971326705HypertonicThe right side is _____ compared to the left side.19
4971326706left, right, osmosisWater will move from the _____ to the _____ by _____.20
4971326707Cell MembraneComposed of a phospholipid bilayer21
4971326708Phospholipidmolecule that makes up cell membranes. It has a hydrophilic "head" and two hydrophobic "tails".22
4971326709Hydrophilicwater loving. substances that easily mix with water.23
4971326710Hydrophobicwater hating. substances that will not mix with water.24
4971326711Transport ProteinProteins within the cell membrane that function to move substances into or out of the cell.25
4971326712Passive Transportmolecules move with the concentration gradient from high to low concentration NO energy required.26
4971326713Types of Passive TransportDiffusion, Osmosis and Facilitated Diffusion27
4971326714Types of Active TransportEndocytosis (phagocytosis and pinocytosis) Exocytosis, and Protein Pumps - Lower Concentration to Higher Concentration28
4971326716phagocytosis"Cell eating" a type of endocytosis in which large particulate substances or small organisms are taken up by a cell. It's carried out by some protists and by certain immune cells of animals.29
4971326718fluid mosaic modelthe currently accepted model of cell membrane structure, which envisions the membrane as a mosaic of protein molecules drifting laterally in a fluid bilayer of phospholipids.30
4971326725concentration gradientprocess of particles (solutes) moving through a solution from an area with a higher number of particles to an area with a lower number of particles31

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