3 organic 118 - Biology 118 3. ORGANIC MOLECULES Whats...

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Biology 118 3. ORGANIC MOLECULES What’s organic? In chemical terms, organic molecules always contain carbon and hydrogen, and sometimes oxygen. CARBOHYDRATES: These include common sugars and starches, and are generally soluble in water. Monosaccharides – a carbohydrate composed of 3-7 carbon atoms. Also called ‘simple sugars’. Disaccharides – two monosaccharides bonded together. Polysaccharides – longer chains of monosaccharides. LIPIDS : These compounds are generally insoluble in water. Fatty acids – long chains of carbon atoms. In saturated fatty acids, all the carbons are connected to each other with single covalent bonds (they are ‘saturated’ with hydrogen atoms). Some of the carbons in unsaturated fatty acids are joined by double covalent bonds (and thus have less than the maximal number of hydrogens). Fats – also called triglycerides. This is where three fatty acids are bonded to one glycerol molecule.
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3 organic 118 - Biology 118 3. ORGANIC MOLECULES Whats...

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