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BIOMOLECULES
1.1 - Coggle Diagram
BIOMOLECULES
1.1
LIPIDS
solid = fat, liquid = oil
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MELTING TEMP
unsaturated fats = lower melting temp - C=C bond creates kink in chain - can't pack closely together - less attraction between molecules - less energy needed to break them apart
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SATURATED FATS
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LDLs - low density lipoproteins - line coronary arteries and constrict blood flow - cause angina + myocardial infarction
unsaturated fats create HDLs - high density lipoproteins - carry he LDLs to the liver to be metabolised
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CARBOHYDRATES
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MONOSACCHARIDES
function = energy source for respiration, form large molecules
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characteristics = soluble, sweet, form crystals
DISACCHARIDES
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example: maltose (2 glucose), sucrose, lactose
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STARCH (plants)
amylose
helical, compact, 1-4 bonds, linear
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CELLULOSE
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long straight chains, structural polysaccharide
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PROTEINS
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4 LEVELS OF STRUCTURE
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tertiary
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ionic, disulfide, hydrogen, hydrophobic+hydrophillic
quaternary
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globular: haemoglobin - 4 polypeptides, each one minds to 1 oxygen molecule, soluble, ball shaped
fibrous: collagen - 3 polypeptides, triple helix, strong, insoluble, parallel strands cross linked