Human Biology - Biochemistry

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A-Level Human Biology Unit 1 Fichas sobre Human Biology - Biochemistry, creado por mcrfan354 el 11/04/2015.
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Fichas por mcrfan354, actualizado hace más de 1 año
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ISOMERS Compounds that have the same chemical formula, but which differ in the arrangement of atoms
POLYMERS Longer chains of repeating monomer units
CONDENSATION REACTION When 2 monosaccharides join to from a disaccharide with the elimination of water and the formation of a glycosidic bond
HYDROLYSIS The addition of water to a disaccharide resulting in the formation of 2 monosaccharides
DISACCHARIDE 2 monosaccharide units linked together with the formation of a glycosidic bond and the elimination of water, called a condensation reaction
POLYSACCHARIDE Large, complex molecules called polymers formed from large numbers of monosaccharide units linked together by glycosidic bonds
POLAR Charged molecules that have 2 ends/poles that interact differently to water and fat. A hydrophillic head is attracted to water but not fat, whereas a hydrophobic tail mixes readily with fat but is repelled by water
HYDROPHILLIC Attracts water
HYDROPHOBIC Repels water
METABOLIC WATER Water produced from the oxidation of food. When water is scarce, a camel can metabolise fats
TRIGLYCERIDE Consists of one molecule of glycerol and three fatty acid molecules, and are formed by condensation reactions
SATURATED Contains only single carbon-carbon bonds
UNSATURATED Contains one or more double carbon-carbon bonds
R - GROUP Groups that can vary
COHESION The sticking together of water molecules in a strong lattice framework
HIGH SPECIFIC HEAT Large amount of heat energy is needed to raise the temperature of water because hydrogen bonds between water molecules restrict their movement
HIGH LATENT HEAT Great deal of heat energy is needed to change water from a liquid to a vapour state
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