Chapter 2: Movement Of Molecules PDF

V E D SO L CHAPTER 2 MOVEMENT OF MOLECULES  Diffusion A T Osmosis mollions mollions WATER Type TconctodconctconctotconcTW.PH W down concAgainst conc Directi...

V E D SO L CHAPTER 2 MOVEMENT OF MOLECULES  Diffusion A T Osmosis mollions mollions WATER Type TconctodconctconctotconcTW.PH W down concAgainst conc Direction gradient gradient downWP gradient Dueto Random through through How of specific movement mol P.P.mn proffries Active Active passive passive needs Energy passive from Aerobic Resp of mitoch  CIE J15 P31 WP W Face Nf PII Salt solution has lower W P than the cell Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 14 MOVEMENT OF MOLECULES  CIE J15 P32 in iso mostone waited normal shape Biconcave shape shrink f T dilute Has cell wall WP of plant cell may be equalthan 0.10mold Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 15 MOVEMENT OF MOLECULES  CIE J15 P32 0.15 mol dm It No net movement of water Cells remainnormalshape AW Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 16 MOVEMENT OF MOLECULES  CIE J15 P33 passiver s s protein cani ggyfinger Madeof Root hair cysts that has projectionstoinc.thes.A.fr like more absorbtion ions of active transport by against conc gradient throughspecificptein carriers usingenergy IEP 10 10 10 10 10 10 Inder X Axis yPÑi's I 4.4 Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 17 MOVEMENT OF MOLECULES  CIE J15 P33 2009dm 3 175 183 8 100 4.4 As the onions did not have the same initial mass To Allow Fair Comparison 45 4.4 45 9dm unit 4411 9dm Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 18 MOVEMENT OF MOLECULES  CIE J15 P33 TWP OnionhaslowerW.MSn.hashigherW.P Onionhashigherw.P.sn haslower WP w.P.ly It Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 19 MOVEMENT OF MOLECULES  CIE J16 P41 Carbondioxide 02 AerobicRespiration Diffusion Dilute WP 0 He 0 HE O so cell needs to remove excess water to preventbursting as it has No cell wall Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 20 MOVEMENT OF MOLECULES  CIE J16 P41 I As the conc of sea water in Removalof water def As the conc of sea water in less W P gradient between seawater cell less water enters cell by osmosis at high conc of seawater less excess water to be removed it T.IN PEater IE t Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 21 MOVEMENT OF MOLECULES  CIE J16 P41 As the cell wall is inelastic Resists any increase in turgor pressure So prevents the cell from bursting The cell becomes turgid Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 22 MOVEMENT OF MOLECULES  CIE J16 P42 Dep 4 dittany IEP t IDepy Life Biology IGCSE Final Initial Dr. Magda Amin Dr. Mohamed Eldahan 23 MOVEMENT OF MOLECULES  CIE J16 P42 1 0 moldm sodium chloride To remove excess water on potato sticks To measure the mass of potato stick only I Cell mem b is damaged No Net osmosis will OCCU Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 24 MOVEMENT OF MOLECULES  CIE J16 P43 5Éx a A Iodinesolution Yellow Edition starch Blue Black Iodine mole will diffuse into wishingbag down conc gradient Iodine mol are smalltrough to passthrough the p.P.mn of the ba Iodine stains thestarch sol.in bag Colorchanges fromyellow Brown to Blue Black Starch not do not diffuse out ofbag Starch mol are toolargeto pass througp.p.mn Color ofiodine in outer solution remains yellow Brown Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 25 MOVEMENT OF MOLECULES  CIE J16 P43 Conc gradient Temperature Surface Area of molecules size Thickness of membrane time Fasterslower Factors a ecting rate of di usion: Effetaration Temperature Syeface sized of Thickness membrane concgradient II E TSA É mo1 dmemb Thickness Diffusionrate Diffusionrate Diffusionrate Diffusionrate Diffusionrate 50 3 50 48 IE Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 26 MOVEMENT OF MOLECULES  CIE J17 P42 2 Active transport E Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 27 MOVEMENT OF MOLECULES  CIE J19 P41 Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 28 MOVEMENT OF MOLECULES  CIE N19 P41 By ActiveTransport osmosis Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 29 MOVEMENT OF MOLECULES  CIE N20 P41 osmosis solvent W.P WP Biology IGCSE Dr. Magda Amin Dr. Mohamed Eldahan 30 MOVEMENT OF MOLECULES