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BIO 350 Week 3 Cell Structure and Function - Cell Types and Transport Assignment

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Question;Cell Structure and Function:CellTypes andTransportLABREPORTASSISTANT Thisdocumentisnotmeanttobeasubstituteforaformallaboratoryreport.TheLabReport Assistantissimplyasummaryoftheexperiment?squestions,diagramsifneeded,anddatatables thatshouldbeaddressedinaformallabreport.Theintentistofacilitatestudents?writingoflabreportsby providing this informationin an editable filewhichcan be sentto an instructor.OBSERVATIONSDataTable 1: Cell StructuresProkaryote Cell StructureOrganism name:EukaryoticCell StructureOrganism name:Flagella CellwallCapsule or slime layer Nucleoid Plasma membrane Cytoplasm Ribosome Thylakoid EndosporePseudopodia Cell membraneNucleus Cytoplasm Contractilevacuole Foodvacuole Endospore1DataTable 3: Diffusionthrough a DifferentiallyPermeable MembraneAt Beginning of Exercise?.. At End of Exercise ?..What are itsContents?What it itsinitialColor?What is itsfinalColor?Benedict?sTest ColorWhat are its finalcontents?DialysisTubingNABeakerWaterExercise1:ProkaryotesandEukaryotes-Differences in Cell Structure and FunctionRESULTS1. What differencesare observed between the two cells thatwere drawn?2. List the specificcell part that each cell type possessesto:ProkaryoteEukaryoteEscape from hazardousconditions?Regulatewatercontent?Storefood?Reproduce?QUESTIONS A.With which cell type, prokaryote or eukaryote, areyou mostfamiliar?B. Which cell typewould be most successful inextreme environments? Why?C. BecausetheProkaryotebacteriaaregenerally3?morlessinlengththeymaynotexhibit specificstructuresunderacompoundlightmicroscope.Whattypeofmicroscopewouldbea betterchoicefor viewing bacteria?D.Researchamoebasonlineandgiveafewexamplesincludingwheretheyarefoundandwhat energy source they use.E. Discusswhethercyanobacteriaandamoebasarebeneficialordetrimentaltohumansandto the environment ingeneral.Exercise2:Eukaryotes?PlantandAnimalCellStructure and FunctionRESULTS 1. What differencesare observed between the two cells thatwere drawn?2. List the cell part that each cell type possessesto:PlantAnimalRegulatewatercontent?Produce energyto power cell function?Storefood?Reproduce?QUESTIONSA.With which cell type, plant or animal, areyou mostfamiliar?B. Which cell typewould be most successful inextreme environments? Why?C. OutlinethegeneraldifferencesbetweenplantandanimalcellsinTable1.Thenoutlinethe similarities.Table1: ComparisonofStructure andFunction:AnimalandPlantCellsAnimal CellsPlant CellsDifferences:Similarities:Exercise3:TransportofMaterialsthroughCellMembranes ? An Example ofPassiveTransportQUESTIONS A.Which mediumexhibited thefastestrate of diffusion?B. What might bereasonstoexplain the differencesin therate of diffusion?C. Graphthe twosets ofresultsfromTable2 onthe same graphusingacomputer spreadsheet programandincludethisgraphinyourreport.Whyissimultaneousgraphingoftheresultsuseful here?Whattypeofgraphwouldbestdemonstrateratesofdiffusioningelatinversusliquid?Hint: The graph should show acontinuityfrom Toto T1for both mediums.DISCUSSION A.Wereyour twohypotheses supported orrefuted?B. How might therate of diffusionbe increased? Decreased?C. How might this betested?D.Why is thisexercise be anexample of passive transport?E. Whymustthespreadofthecoloringinthegelatinbemonitored?Forexample,whycan?tit just be leftfor 10 hours before the measurement istaken?F. Whatwouldbeagraphicmethodtodetectwhentherateofdiffusioninthegelatinwasat maximum andwas beginningto slow?G.Constructatablethatcomparesyourresultstotheaverageofyourclassmates?results,ifavailable. Indicate how many classmates?results arerepresented in theaverage (N=?). Include it inyourreport. Areresults similar? If not, what mightexplain the differencesin outcomes?Exercise4:TransportofMaterialsthroughCellMembranes ? An Example of ActiveTransportQUESTIONS A.What are thetest substances?B. Why did acolor change occur in the jarwater? What does thecolor change indicate?C. Why did acolor change occur in the dialysis bag? What does thecolor change indicate?D.What does the Benedict?sreagenttest detect? What does thetest of the jarwater indicate? E. What DID NOT diffuseacross the dialysis bag membrane? Why?DISCUSSIONA.Wasyourhypothesis supported orrefuted?B. How might the dialysis membrane tubing be similarto a plasma membrane?C. What type of transport mechanism does thisexercise simulate?D.Whatcan beconcluded from thisexercise?LABORATORYSUMMARYWhat haveyou learned from doing this laboratory?

 

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