Biological Molecules - Lipids.

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Triglycerides are made of one molecule of glycerol with three fatty acids. Fatty acids have long Hydrocarbon tails, these are hydrophobic making them insoluble in water. The fatty acids consist of the same basic structure but the hydrocarbon tail varies. Lipids contain an ester bond.

Phospholipids are found in cell membranes, one of the three fatty acids is replaced by a phosphate group which is ionised making it attract water meaning that the phosphate molecule…


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