lipids/triglycerides

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10 Terms

1
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triglycerides

nonpolar hydrophobic molecules made of one glycerol molecule and 3 fatty acid molecules

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bonding

bonding occurs between free OH groups of glycerol and opposing free OH groups of fatty acid molecules

<p>bonding occurs between free OH groups of glycerol and opposing free OH groups of fatty acid molecules</p>
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ester bonds

formed between triglyceride building blocks when water is removed

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condensation reaction

when water is added

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saturated fatty acids

has a straight appearance

<p>has a straight appearance </p>
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unsaturated fatty acid

kinked appearance due to carbon double bond

<p>kinked appearance due to carbon double bond</p>
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phospholipid

have hydrophilic head formed by a phosphate group

<p>have hydrophilic head formed by a phosphate group </p>
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importance of triglycerides

prevent dehydration in plants waxy cuticle…energy reserve and for insulation…sex hormone function

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importance of phospholipids

one fatty acid replaced by phosphate group to create hydrophilic head which has an affinity to water…form plasma membranes

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hydrophilic heads

heads are attracted to each other in water whereas tails point away from water creating a double layer carpet of phospholipids which can enclose cavities