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11 Transport in Cells-S (KEY)

This text explores how water moves in and out of cells through osmosis, highlighting the importance of water balance in the body. Disrupted water levels can harm cells and organs, potentially causing swelling, brain damage, or even death.

Mason Bennett
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Tftwepon in CeiteHow da water molecules WW and out of ceils?w ?Water iccwmis for over 7(WTthehuman body. If water Jeyelssre not regulatedmaintained in anotganlsm t k; pn&SlieiKK can kdisitfteoiJS- CHfcnd [issues may swell, bltmd cells burst, or the brainmay expand so much ft pushes on the skill, leading to brain damage and death. So what exactly is theprocess that allwe organisips to regulate and maintain dieir water content?Mattel I -TWavemem of Water In and Out of CeikSugar molecules (sciute)+~.aleculea (solvent!I- Ast a whitei s o K MtnbtedForthe wlutwin M o d e l1sfld PWld? the sbolfpr fflea-s o t e§ j j g @b-SPleRL4teri2.Caraidtf the aUeqi rheg rand W Witepkcuiesin Model 1- W e bmQpdesin the diagramJ s et kwintate?Jbesugar wolEcse too Jfcgewft.thrush theseiemvehuermizbie membrane. Therefore, onlyrhe w wriiioysh ite3. (Sfiffi eie rhefnpiein Model J.Outbid?rhe £eliKwikf r of &§3F&KvmberW F>5d4:1i:tTftwepon in CeiteHow da water molecules WW and out of ceils?w ?Water iccwmis for over 7(WTthehuman body. If water Jeyelssre not regulatedmaintained in anotganlsm t k; pn&SlieiKK can kdisitfteoiJS- CHfcnd [issues may swell, bltmd cells burst, or the brainmay expand so much ft pushes on the skill, leading to brain damage and death. So what exactly is theprocess that allwe organisips to regulate and maintain dieir water content?Mattel I -TWavemem of Water In and Out of CeikSugar molecules (sciute)+~.aleculea (solvent!I- Ast a whitei s o K MtnbtedForthe wlutwin M o d e l1sfld PWld? the sbolfpr fflea-s o t e§ j j g @b-SPleRL4teri2.Caraidtf the aUeqi rheg rand W Witepkcuiesin Model 1- W e bmQpdesin the diagramJ s et kwintate?Jbesugar wolEcse too Jfcgewft.thrush theseiemvehuermizbie membrane. Therefore, onlyrhe w wriiioysh ite3. (Sfiffi eie rhefnpiein Model J.Outbid?rhe £eliKwikf r of &§3F&KvmberW F>5d4:1i:t

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4- W W f cspiran,inModel1|s moreconc.exrcared—thesoUtioninside die cell or outside of Lieyour answer in terms ci the ratio of salute to solvenr particles.The solution outside of the cell has a higher solute to sohentrado, so itKp w e concentrated.§.Consider the arrowsindicatingmovement of watet acrossthe membrane.a.fr* whichdirectionarew'ecesmoleculesmccwin—arto Qf out of theThe water molec’rlere movingboth mm and out of the cell.b■Are mote watCTinto ar out of the cell?water moleculemoving out of the cell.£• Is the net dUJ W pi waferW - Winto or out of the cell?Thejtdirection of waler moys mis awl of ine reU-6.Circle the correct wardbptawtaindicate dw chgF i& the farrcetihon of the sugar saluWHifin eadj side of the memhnpwater matepmove-*■The rcrilition wside the cellwillbecomeG t o )I.concentrad withdie net movement <4*b.The solutionOPside thefeUwillbecome(mpffih-■. concentrated with the net movement ofWTAppb-Wgwhat you alreadyknow about die randomwplecUewhatwilleventu-aliy happen to the concentration on both sides of the membrane?Th?willeventually reach dvnamic equilibrium; the canceutzammwjjibe the s.am?iwd?MWalPFwillnnweHcroasthemembrane equallyia bothdfwpjws.8,Thedeflnitwftofdiffuseis the movementofraulemiesacrossaanarea ofhigh concentEacom to an area of low ccHicentiatwiu Accessing to this definition,»die ceif inXbodsaiuadec oiiig: dit tusmn?Answerswillvary;Somestudents may understand thatfromtheperspecnveofdie water molecukcon-f&ftjflibmih?JBhfodrfI » fiw?wfltwithdusidoe.Otherswillsayto-teomdperspechveof Uiesugarsojuliotj conwwalmB,rti.sgoing the cpositatentm.9,In the cell diagramin Mod&l L, wtiP£diphighfconcentration of water—maor outside ofthe £f U?4arnwf'■w w+a*10, Is theceiliaModel1undergoing diffusion if you consider the c0r»HW4FW of water on eitherside of the selectively permeable membsann? Explain.Tfefi,theet(ftnectFonof watermo/eculemoveamentisf>»m the area of Wghw atermoJanulepowientr.a-W itofct>-%it»mDitcuteconcemrauoa4.W AsphjEjcmin Model1is more corxestrated—the notation inside dieceUorQUtsidcof the{££? Espial} your answer in terms of the ratio of solute to solvent pmticles.The sahition outsideofthe cell has a higher solute to solventrario, so it is more concentrated.§. Consider the arrows indicating movement of warn? across the membrane.a.In which dirpffipti are warer molecules mot■ins—MitoOFout of theThe water moleculesreeving bothjnWand outofthe cell.b. Are more wawmolecdesino\ingimoQrof the cell?: eb WmoleculesmopMoutefttecell.p.. Is the net direction of waterw V P = Winto or out of the cell?The net dSwchon ofwatermoyetwissufofthe cell.Circle the correct word bgtawtti indicate dw change in epe pqueeution of the sugar solutionon each side of the memhne$$water molep4move-*The- solution inside the cell willbeccwtfeOk..concerewdwith the get movement ofWflWhb. The mluticm cuynide the ped will become (reWfi lr-concentrated with the net movement ofWTTryingwhat you alreadyknow about the random mnwwwof molecuiewbaf will eventu-ally happen to the concentration, on both sides of thernembrw?Th? coyciL-adQUeventually reach dynamic equilibrium; thecwwxratinnwillthew,4F?d9WhS5$ ttWF willnrewescrosssb?membrane equally in both dlrctibbtis■S. The definition of ditfusiw* is the movement of moleculesacro&sa membraneM ian area ofhigh concentration! to an area of low concentration,. Anc-cing.to this definition, & (he ceil jn\fodfei1uadergomg diffusion? Espliifl:Answers will vary. Somestudents may uadfcraaiidtiwomthepeFspKtiveoftiw wafer moleculecon-ceuguIsP&estiwWTjh dusun. Others uniisayto-tom- dpe«p«iiveof the sugartowflWfiWWB,it isgoing the jqgpo&afcKtion.9,In the cell diagram m ModelL,wh rgithphighgt concentration of water—taepr outside qithe €«U?OMrpwf*WT»S?W".’T#W»FfW J-WS*jh?&&■-10, ]s the cell in Model1undergoing diffusion if you considerthe conpgmRRil of water on eitherside of the selectively permeable membruae? Eitplain.TH, the net threctron of waterpno/eculemovementsthe area ofWgh watermoieroufecorvG&ntr.a-twu to few wawf makefilecoticemra-jow
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Biology

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