BIOL 202 Lecture Notes - Lecture 3: Galactose, Fructose, Polysaccharide
15 Oct 2018
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Document Summary
Properties of water: cohesion, high surface tension, high heat capacity. Heat from the sun is used for rearranging hydrogen bonds rather than increasing the water temperature. Living organisms in water live in relatively constant environment: solid water (ice) is less dense than liquid water. Due to a rearrangement of the hydrogen molecule. Ice and snow work as insulation for the water below, where fish can survive through winter: water dissolves other substances. Solvent is a liquid that can dissolve another substance. Solute is the substance dissolved in solvent. Solution is mixture of solute and solvent. Positively charged na+ ions are attracted to the negatively charged side of the. H2o molecule, while negatively charged cl- ions are attracted to the positively charged side. Hydrophilic (hydro = water, philic = like: molecules with charges dissolves in water. Hydrophobic: non-polar molecules do not dissolve in water. Small portion of water molecules dissociate and get ionized.
