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Fats and Oils
What are the functions of fats and oils in the body?
Insulation
- Long term energy store
How do fats and Oils differ?
They have different melting points.
m.t.p above room temp = fat (ex. butter)
m.t.p below room temp = oil (ex. olive oil)
What are triglycerides?
They are triesters of an alcohol - propane-1,2,3-triol (glycerol) and three fatty acid molecules.
Draw the structure of a triglyceride
What are fatty acids?
Long chain carboxylic acids.
What are unsaturated fatty acids?
Fatty acids without any double bonds.
What are saturated fatty acids?
Fatty acids with one or more double bond(s).
Explain how to use shorthand for the structure of fatty acids.
1) The first number indicates the number of Carbon atoms
2) The second number indicates the number of double bonds
3) The number in the brackets indicates the position of the double bond.
What is the shorthand for the following fatty acid?
18:2 (9,12)
Octadeca-9,12-dienoic acid
Describe the structure of a triglyceride
Triglycerides are triesters with three fatty acids joined to each of the alcohol groups on glycerol through an ester linkage.
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