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| Solvent in which the chemcial reactions of living cells take place. 70 to 80 percent of a cell's mass is due to water. Small polar molecule. |
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| The attractive force between one electronegative atom and a hydrogen covalently bonded to another electronegative atom. Provides a stong cohesive force between water molcules. Is a result from dipole-dipole force with a hydrogen atom to a nitrogen, fluorine, or oxygen. |
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| "Love of Water" dissolve easily in water because of their negatively charged ends attract the positively charged hydrogens of water, and their positively charge ends attract the negatively charge oxygen of water. |
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| Commonly called dissolution, is the process of attraction and association of molecules of a solvent with molecules or ions of a solute. |
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| Most macromolecules of living cells are broken apart by this process. Hydrolysis is a chemical reaction during which one or more water molecules are split into hydrogen and hydroxide ions, which may go on to participate in further reactions. |
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| Most macromolecules of living cells are formed by this process. Basically, the removal of water from an object. |
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| Any biological molecule that has low solubility in water and high solubility in nonpolar organic-solvents. Hydrophobic. |
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| Six Major Groups of Lipids |
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| Fatty acids, triacylgycerolds, phospholipids, glycolipids, steroids, and terpenes. |
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| Building blocks for most, but not all, complex lipids. Long chains of carbons truncated at one end by a carboxylic acid. Usually an even number of carbons with the maximum number being 24. |
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| Possess only single carbon-carbon double bonds. |
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| Possess one or more carbon-carbon double bond. |
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| Or Triglycerides, fats and oils are constructed from a three carbon backbone called glycerol, which is attached to three fatty acids. Fuctions is to store energy, thermal insulation and padding to an organism. |
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| fat cells; specialized cells whose cytoplasm contains nothing by triglyercides. |
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| Built from a glycerol backbone, a polar phosphate group, and two fatty acids. |
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