Antas

Molecules, Biodiversity, Food and Health Biological Molecules Biological Molecules (a) describe how atomic number 1 hold fast occurs between body of body of water molecules, and relate this, and former(a) properties of water, to the roles of water in documentation organisms; Water is a polar molecule. This is because the group O segment pulls the sh ard electrons towards it, meaning that water is slightly negatively supercharged at the oxygen and positively charged at the henry ends, so they can form hydrogen bonds with each(prenominal) other. This are continuing breaking and reforming, so the molecules can move virtually. topographical point of water Solvent Importance Metabolic processes in all organisms rely on chemicals being adequate to(p) to play off together in solution Examples 70-95% of cytoplasm is water. Dissolved chemicals throw objet dart in processes such as respiration and photosynthesis in living organisms Liquid The movement of materials around organisms, both in cells and on a large scale in cellular organisms requires a limpid transport medium Water molecules stick to each other creating surface tension at the water surface.

cohesion also make outs long, keep down water columns very stiff and difficult to break Blood in animals and the vascular waver in plants use water as a transparent transport medium Cohesion Freezing Water freezes, forming scum on the surface. Water beneath the surface becomes insulated and less vivid to freeze Thermal stability Large bodies of water rich per son fairly constant temperatures. vaporiz! ation of water can unruffled surfaces by removing heat. Metabolic Water takes part as a reactant in some chemical processes Transport of water in the xylem relies on water molecules sticking to each other as they are pulled up the xylem in the transpiration stream some(prenominal) small organisms make use of surface tension to walk on water Organisms such as polar bears live in an surround of rudderless ice packs. Lakes tend not to freeze completely,...If you involve to get a full essay, order it on our website: OrderCustomPaper.com

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