Skip to content
Solved Assignments

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.

Preview 2 of 5 pages

See the first 2 pages exactly as they appear in the document.

  1. Page 1
    Read page 1 as text

    Tftwepon in Ceite How da water molecules W W and out of ceils? w ? Water iccwmis for over 7(WT the human body. If water Jeyelssre not regulated maintained in an otganlsm t k ; pn&SlieiKK can k disitfteoiJS- CHfc nd [issues may swell, bltmd cells burst, or the brain may expand so much ft pushes on the skill, leading to brain damage and death. So what exactly is the process that allwe organisips to regulate and maintain dieir water content? Mattel I -TWavemem of Water In and Out of Ceik Sugar molecules (sciute) + ~.aleculea (solvent! I- A st a white i s o K M tnbted For the wlutw in M o d e l 1 sfld PWld? the s bolfpr ffle a- s o t e § j j g @ b- SPl eRL 4ter i 2. Caraidtf the aUeqi rhe g rand W W itepkcuiesin Model 1- W e b mQ pdesin the diagram J s e t k wintate? Jbe sugar wolEc s e too Jfcge wft. thrush the seiemvehuermizbie membrane. Therefore, only rhe w w riiioysh ite 3. (Sfiffi eie rhe fnpie in Model J. Outbid? rhe £eli Kwikf r of &§3F & Kvmber W F >5 d 4:1 i:t Tftwepon in Ceite How da water molecules W W and out of ceils? w ? Water iccwmis for over 7(WT the human body. If water Jeyelssre not regulated maintained in an otganlsm t k ; pn&SlieiKK can k disitfteoiJS- CHfc nd [issues may swell, bltmd cells burst, or the brain may expand so much ft pushes on the skill, leading to brain damage and death. So what exactly is the process that allwe organisips to regulate and maintain dieir water content? Mattel I -TWavemem of Water In and Out of Ceik Sugar molecules (sciute) + ~.aleculea (solvent! I- A st a white i s o K M tnbted For the wlutw in M o d e l 1 sfld PWld? the s bolfpr ffle a- s o t e § j j g @ b- SPl eRL 4ter i 2. Caraidtf the aUeqi rhe g rand W W itepkcuiesin Model 1- W e b mQ pdesin the diagram J s e t k wintate? Jbe sugar wolEc s e too Jfcge wft. thrush the seiemvehuermizbie membrane. Therefore, only rhe w w riiioysh ite 3. (Sfiffi eie rhe fnpie in Model J. Outbid? rhe £eli Kwikf r of &§3F & Kvmber W F >5 d 4:1 i:t

  2. Page 2
    Read page 2 as text

    4- W W f c spiran, in Model 1 |s more conc.exrcared — the soUtion inside die cell or outside of Lie your answer in terms ci the ratio of salute to solvenr particles. The solution outside of the cell has a higher solute to sohentrado, so it K p w e concentrated. §. Consider the arrows indicating movement of watet across the membrane. a. fr* which direction are w'eces molecules mcc win — arto Qf out of the The water molec’rle re movingboth mm and out of the cell. b ■ Are mote watCT into ar out of the cell? water molecule moving out of the cell. £• Is the net dU J W pi wafer W - W into or out of the cell? Thej t direction of waler moy s m is awl of ine reU- 6. Circle the correct ward bptawta indicate dw ch gF i& the farrceti hon of the sugar saluWHi fin eadj side of the memh np water matep move- * ■ The rcrilition wside the cell will become G t o ) I. concentra d with die net movement <4 * b. The solution OP side the f e U will become (mpffi h - ■ . concentrated with the net movement of W T Appb-Wgwhat you alreadyknow about die random wplecUe what will eventu- aliy happen to the concentration on both sides of the membrane? Th? will eventually reach dvnamic equilibrium; the canceutzamm wjji be the s.am? iwd? M WalPF will nnweHcroasthe membrane equally ia both dfwpjws. 8, The deflnitwft of diffuse is the movement of raulemiesacrossa an area of high concentEacom to an area of low ccHicentiatwiu Accessing to this definition, » die ceif in Xbodsa i uadec oiiig: dit tusmn? Answers will vary; Some students may understand that from theperspecnveofdie water molecukcon- f&ftjflibm ih? JB hfodrf I » fiw?wfltwith d usidoe. Others will say to-teom d perspechve of Uie sugar sojuliotj con wwalmB, rt i.s going the c positatentm. 9, In the cell diagram in Mod&l L, wtiP£ diphigh f concentration of water — ma or outside of the £f U? 4 ar nwf' ■ w w+a* 10, Is the ceilia Model 1 undergoing diffusion if you consider the c0r»HW4FW of water on either side of the selectively permeable membsann? Explain. Tfefi, the et (ftnectFon of water mo/ecule moveamentis f>»m the area of Wgh w a ter moJanul e powientr.a- W i to fct>- %it» mDitcuteconcemrauoa 4. W A sphjEjcm in Model 1 is more corxestrated—the notation inside die ceU or QUtsidc of the {££? Espial} your answer in terms of the ratio of solute to solvent pmticles. The sahition outside of the 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 — Mito OF out of the The water molecules reeving both jn W and out of the cell. b . Are more waw molecdesino\ing imo Qr of the cell? : e b W molecules mopM outeftte cell. p.. Is the net direction of water w V P = W into or out of the cell? The net dSwchon of water moyetw is suf of the cell. Circle the correct word bgtawtti indicate dw change in epe pqueeu tion of the sugar solution on each side of the memh ne $$ water molep4 move- * The- solution inside the cell will beccw tfeOk .. concerewd with the get movement of WflWh b. The mluticm cuynide the ped will become (reWfi lr- concentrated with the net movement of W T Trying what you already know about the random mnw wwof molecuie wbaf will eventu- ally happen to the concentration, on both sides of the rnembrw? Th? coyc iL-adQU eventually reach dynamic equilibrium; the cwwxratinn will the w ,4F?d 9Wh S5$ ttWF will nrewescrosssb? membrane equally in both dlrctibbtis ■ S. The definition of ditfusiw* is the movement of moleculesacro&sa membrane M i an area of high concentration! to an area of low concentration,. Anc -cing. to this definition, & (he ceil jn \fodfei 1 uadergomg diffusion? Espliifl: Answers will vary. Some students may uadfcraaiid tiwom thepeFspKtiveoftiw wafer moleculecon- ce ugu I s P&estiwWTjh d usun. Others unii say to- tom- d pe«p«iive of the sugar towflWfiWWB, it is going the jqgpo&afcKtion. 9, In the cell diagram m Model L, wh rgi thphighgt concentration of water — ta epr outside qi the €«U? OMr pwf*WT»S?W".’ T#W»F f W J-WS* jh? && ■ - 10, ]s the cell in Model 1 undergoing diffusion if you consider the conpgmRRil of water on either side of the selectively permeable membruae? Eitplain. TH, the net threctron of water pno/ecule movements the area ofWgh water moieroufe corvG&ntr.a- twu to few wawf makefile coticemra-jow

3 more pages in the full document

Unlock it once and it stays in your library, ready to chat with or turn into flashcards.

Unlock the full document

More Biology study materials

See all

Study this document with CramX

Once it is in your library, every tool can work from it.