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Lipids unlike proteins, carbohydrates and nucleic acids, do not form polymers. They are large molecules with few oxygen atoms and many carbon and hydrogen
This means they have low melting points; in living organisms are often in liquid form, they are hydrophobic, therefore insoluble in water and they are…

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which can result in a number of circulatory problems

Animals cannot make some of the fatty acids they need from
The raw materials taken into their bodies these are called
ESSENTIAL FATTY ACIDS, they must be taken in as a part
Of the diet.
i) Organisms that live in cold…

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