Parts of the Cell Membrane: (p. 184)



Unit 6 Cell Structure and FunctionObjectivesTopic 1: Cell MembraneI can identify the component parts of the fluid mosaic model and describe their function within the cell ic 2: Osmosis and DiffusionI can describe the process of osmosis and diffusion and apply how these processes impact the homeostasis of living organisms. Topic 3: Movement across the Cell MembraneI can differentiate between passive and active transport and how each is utilized within the cell ic 4: Important Scientists and Cell TheoryI can differentiate between prokaryotic and eukaryotic cells and list the three parts of the cell theory and the scientists who contributed to its ic 5: Cell OrganellesI can identify and describe the function of all membrane bound organelles and structures found in plant and animal cells and how these changes within the cell can lead to specialization.Important Dates:Vocabulary DueQuiz 1 – VocabularyQuiz 2 – Topics 1 through 5LAB – Osmosis and DiffusionProject – Unit TestVOCABULARYWordPictureDefinitionCellCell TheoryProkaryoteEukaryoteOrganellesLipid BilayerConcentrationDiffusionSelective Permeability OsmosisFacilitated DiffusionActive TransportEndocytosisExocytosisPhagocytosisPinocytosisCell SpecializationFluid Mosaic Model7-3 Cell Membrane - Osmosis and TransportParts of the Cell Membrane: (p. 184)Diffusion vs. Osmosis:Diffusion – Osmosis - Types of OsmosisType of OsmosisDescriptionPicture1. Isotonic Solution2. Hypertonic Solution3. Hypotonic SolutionTypes of DiffusionSimple Diffusion – ExampleFacilitated Diffusion - Example: Active Transport - Example: (See pages 188-189)137922012700Diagram:Forms of Active Transport: Endocytosis – Exocytosis - REVIEW: Look over your notes and give a statement with 3 words or less!Fluid Mosaic = Osmosis = Isotonic = Hypertonic = Hypotonic = Diffusion = Simple diffusion=Facilitated diffusion = Active diffusion or transport = Endocytosis =Pino = Phago = Exocytosis = Moves: 4257675-116205Osmosis Egg LabBackground InformationCells have an outer covering called the cell membrane. This membrane is selectively permeable; it has tiny pores or holes that allow objects to move across it. The cell membrane controls what moves in and out of the cell. Food and oxygen move into cells across the cell membrane through the process of diffusion. Diffusion is movement of a substance from an area of high concentration to an area of low concentration. Osmosis is a special type of diffusion; it is the diffusion of water across a selectively permeable membrane. Osmosis occurs when water moves from an area where it is more concentrated to an area where it is less concentrated. In this lab you will be using an egg with the shell removed. The shell-less egg will represent a cell and its selectively permeable membrane. The shell of the egg was removed by soaking the egg in vinegar. The egg shell is made up of the mineral calcium carbonate. Calcium carbonate dissolves in acids such as vinegar. During this process it releases the gas carbon dioxide. After the shell has been dissolved, only the membrane will remain around the egg.66675040640Name___________________________Block____________________Date____Beaker 1 – Syrup Solution Is the syrup a hypotonic, hypertonic or isotonic solution for the egg to be placed in? Explain your answer using the definition. What is the solute in this solution?Draw what you expect your egg to look like next class? Explain why you think it will look like your drawing by describing what will occur to the cell, the syrup and the fluid in the cell?DrawingExplanation for your predictionDraw what the egg actually looked like. Was your prediction correct? If not, explain what happened since we put the egg in the syrup.DrawingWas your prediction correct? If not, explain what happened.Beaker 2 – Distilled Water SolutionIs the water a hypotonic, hypertonic or isotonic solution for the egg to be placed in? Explain your answer using the definition. What is the solute in this solution?Draw what you predict will happen to the egg in this solution. Explain your answer by describing what will occur to the cell, the water and the fluid in the cell.DrawingExplanation for your predictionDraw what the egg actually looked like. Was your prediction correct? If not, explain what happened since we put the egg in the water after being in the syrup.DrawingWas your prediction correct? If not, explain what happened.Review: Use your NOTES and VOCABULARY to answer the questions in COMPLETE sentences.What was the solute in this experiment?What were the solvents?When did the egg shrink? Why?When did the egg swell? Why?Diffusion ApplicationName___________________________Block____________________Date____Directions: Name the physical or physiological process involved in each of the following situation. Select carefully as each answer may be used only once! Choose form the following:OsmosisActive TransportTurgor PressureDiffusionEquilibriumHypertonic SolutionHypotonic SolutionA person soaks celery in water so the cells swell. This makes it crisp before servingA person pours salt on the grass growing in the cracks in the sidewalk and the grass dies.Roots of broccoli absorb calcium even when their cells contain higher concentrations of Ca than the soil solution around them.When you wake up you can smell the coffee your mom or dad is making in the kitchen.A student studying blood places some cells in distilled water; they swell and burst.A bottle of cologne is left open soon the odor and the other gasses in the room are evenly distributed through all the parts of the room.As they invade your body, bacteria are engulfed by white blood cells as the cell membrane closes behind them.What is meant by a concentration gradient? How does it affect the rate of diffusion? Draw a picture to explain you answer. Think about how an odor moves across a room.What other factors that affect the rate of diffusion?Label the cell membrane diagram. Answer the following: A cell takes in two substances (A and B) which are present in concentrations lower outside the cell than inside the cell. Substance A is a large molecule needed by the cell. Substance B is a liquid droplet. Each substance enters the cell by a different process. Describe how each substance enters the cell using vocabulary from your notes.OSMOSIS and DIFFSIONDefine the Following:DiffusionSemi permeable membraneFluid MosaicOsmosisComplete the tableType of SolutionISOTONICHYPERTONICHYPOTONICEffect of a cell (choose words or use a diagram)Freshwater protozoan such as a Paramecium must constantly pump out water to keep from bursting. What does this tell you about the solute concentration INSIDE the Paramecium compared to the solute concentration of its water environment?What would happen if you made the solute concentration outside the Paramecium the same as that of the inside?PASSIVE and ACTIVE TRANSPOTComplete the table by writing YES or NOACTIVE TRANSPORTFACILITATED TRANSPORTSIMPLE DIFFUSIONRequires energyMoves molecules against the concentration gradientRequires a membrane proteinSodium potassium pump is an exampleAnswer the following questions: Name substances that can diffusion across the cell membrane.Name a substance that is too large to diffuse across the cell membrane.What prevents charged molecules from diffusion across the cell membrane?How is facilitated transport similar to simple diffusion?How does facilitated transport differ from simple diffusion?Chapter 7: Cells Structure and Function Part A: Cell TheoryRead Section 7-1 (169 –172) in your textbook to gather the following information.State the three parts to the traditional CELL THEORY:ABCDescribe what Anton van Leeuwenhoek and Robert Hooke did to contribute to the cell theory.Anton van LeeuwenhoekRobert HookeDescribe what these 3 scientists contributed to the cell theory.Matthias SchleidenTheodor SchwannRudolph Virchow Biologists divide cells into two categories known as Prokaryotes and Eukaryotes. Compare with a Venn Diagram.Part B: Cell Organelles Structure and FunctionDraw with COLOR and Label a plant and animal cellUsing information that can be found using your text (chapter 7), give the function of the following organelles as well as the type of cell they are found in.Place and X in the box if found in Plant, Animal and or ProkaryoteStructureFunctionQuick PictureAnimalPlantProkaryoteCytoplasmXXXCell MembraneNucleusNucleolus5. Ribosome6. Smooth Endoplasmic Reticulum7. Rough Endoplasmic Reticulum8. Mitochondria9. Golgi apparatus10. Lysosome11. Cytoskeleton12. Vacuole13. Centrioles 14. Chloroplasts15. Cell WallWhat organelles are found in plants cells that are NOT found in animal cells? __________________________________________________________________Compare and contrast the following 2 organelles:MitochondriaChloroplast PictureType of cell found inFunction in the cellDifferencesSimilaritiesPhotosynthesis Equation:CHOLORPLAST = PLANT CELLSWater + Carbon Dioxide + Light = Oxygen + GlucoseCellular Respiration Equation:MITOCHONDRIA = ANIMAL & PLANT CellsOxygen + Glucose = Water + Carbon Dioxide + Energy (ATP) Part C: Levels of OrganizationRead pages 192 –193 of your book briefly describe and draw the following levels of ans SystemsOrgansCellsTissues ................
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