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School The traffic solvent through the membrane is due precisely to the difference in pressure between the two sides. But why only the solvent passes? Only the solvent diffuses from hypotonic to hypertonic region, with a tendency to equilibrium concentration. Solutes can not cross the membrane due to the size and characteristics of their own cell membrane (porosity). Scheme passage of solvent through the plasma membrane. Returning to the case of lettuce leaves: DEBATE Discuss with your colleagues and propose an explanation to the following question: What is the relationship between the media hypertonic, hypotonic, and the fact sheet wither? Now look at the diagram below, what happens with a red blood cell, or red blood cell, when placed in media with different concentrations against a solution of sodium chloride 0.9% (saline) Osmosis in red cells Representation of a red blood cell in different solutions. In case 1, the isotonic solution, the cell remains in its normal size; 2 in the case hypertonic solution suffers water loss, fading, and in the case 3, hypotonic solution, undergoes an increase in volume due the entry of water in the cell. This phenomenon is known as hemolysis. Biological Mechanisms
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Škola Promet otapala kroz membranu je upravo zbog razlike u tlakovima između dvije strane. Ali zašto samo otapala prolazi? Samo otapala difundira iz hypotonic se hipertonično regiji, s tendencijom da ravnotežne koncentracije. Otopljenih tvari ne može prijeći membranu s obzirom na veličinu i karakteristike vlastite stanične membrane (poroznosti). Shema prolaz otapala kroz staničnom membranom. Vrativši se u slučaju salata lišća: DEBATA Razgovarajte sa svojim kolegama i predložiti objašnjenje na pitanje: Koja je veza između medija hipertonično, hypotonic i brošura sušiti? Sada pogledajte na slici dolje, što se događa s crvenih krvnih stanica, ili crvenih krvnih stanica, kada se u medijima s različitim koncentracijama protiv otopinom natrijevog klorida 0,9% (soline) Osmoza u crvenim stanicama Zastupanje u crvene krvne stanice u različitim rješenjima. U slučaju 1, izotonični rješenje, stanica ostaje u svoje normalne veličine, 2 u slučaju hipertonično rješenje pati gubitak vode, blijedi, au slučaju 3, hypotonic rješenje, prolazi kroz povećanje volumena zbog ulaskom vode u ćeliji. Ovaj fenomen je poznat kao hemolize. biološki mehanizmi