2 Types of Cellular Transport Animations of Active Transport & Passive TransporthighlowWeeee!!!Passive Transportcell doesn’t use energyDiffusionFacilitated DiffusionOsmosisActive Transportcell does use energyProtein PumpsEndocytosisExocytosishighlowThis is gonna be hard work!!
3 Passive Transport (HighLow) cell uses no energy molecules move randomlyMolecules spread out from an area of high concentration to an area of low concentration.(HighLow)Three types:
4 3 Types of Passive Transport DiffusionFacilitative Diffusion – diffusion with the help of transport proteinsOsmosis – diffusion of water
5 Passive Transport: 1. Diffusion Simple Diffusion AnimationPassive Transport: 1. DiffusionDiffusion: random movement of particles from an area of high concentration to an area of low concentration.(High to Low)Diffusion continues until all molecules are evenly spaced (equilibrium is reached)-Note: molecules will still move around but stay spread out.
6 Facilitated diffusion (Channel Protein) Diffusion (Lipid Bilayer) Passive Transport: 2. Facilitated DiffusionAB2. Facilitated diffusion: diffusion of specific particles through transport proteins found in the membrane.Uses:Channel proteinsand / orCarrier proteinsFacilitated diffusion (Channel Protein)Diffusion (Lipid Bilayer)Carrier Protein
7 Passive Transport: 2. Facilitated Diffusion GlucosemoleculesCellular Transport From a-HighHigh ConcentrationChannel Proteins animationsCell MembraneLow ConcentrationProteinchannelLowTransport ProteinThrough a Go to Section:
8 Passive Transport: 3. Osmosis Osmosis animation3.Osmosis: diffusion of water through a selectively permeable membraneWater moves from high to low concentrationsWater moves freely through pores.Solute (green) too large to move across.
9 Active Transport (Low High) cell uses energy actively moves molecules to where they are neededMovement from an area of low concentration to an area of high concentration(Low High)Three Types:
10 Types of Active Transport Sodium Potassium Pumps (Active Transport using proteins)1. Protein Pumps -carrier proteins that require energy to do workExample: Sodium / Potassium Pumps are important in nerve responses.CarrierProtein changes shape to move molecules: this requires energy!
11 Types of Active Transport 2. Endocytosis: taking bulky material into a cellUses energyCell membrane in-folds around food particle“cell eating”forms food vacuole & digests foodThis is how white blood cells eat bacteria!
12 Types of Active Transport 3. Exocytosis: Forces material out of cell in bulkmembrane surrounding the material fuses with cell membraneCell changes shape – requires energyEX: Hormones or wastes released from cellEndocytosis & Exocytosis animations
13 Effects of Osmosis on Life Osmosis- diffusion of water through a selectively permeable membraneWater is so small and there is so much of it the cell can’t control it’s movement through the cell membrane.
14 Osmosis Animations for isotonic, hypertonic, and hypotonic solutions Hypotonic: The solution has a lower concentration of solutes and a higher concentration of water than inside the cell. (Low solute; High water)Result: Water moves from the solution to inside the cell): Cell Swells and bursts open
15 Osmosis Animations for isotonic, hypertonic, and hypotonic solutions Hypertonic SolutionHypertonic: The solution has a higher concentration of solutes and a lower concentration of water than inside the cell. (High solute; Low water)shrinksResult: Water moves out of the cell into the solution: Cell shrinks.
16 Osmosis Animations for isotonic, hypertonic, and hypotonic solutions Isotonic SolutionIsotonic: The concentration of solutes in the solution is equal to the concentration of solutes inside the cell.Result: Water moves equally in both directions and the cell remains same size! (Dynamic Equilibrium)
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