3.5 Lipids

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  • Created by: ellaj03
  • Created on: 08-05-18 14:38
What is a triglyceride made up of?
One glycerol molecule and three fatty acids
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What is the fatty acid if the hydrocarbon chain has more than one double bond?
Polyunsaturated
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What are sterols?
A type of lipid known as steroid alchols
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What is the test for lipids?
Emulsion test
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What are the main groups of lipids?
Triglycerides (fats+oils; phospholipids & waxes)
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What do phospholipids allow membranes to be?
Flexible and to transfer substances
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Name 4 roles of lipids?
Insulation; Protection; Waterproofing; Energy
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Are lipids soluble?
Insoluble but soluble in organic molecules
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Describe the emulsion test
Mix sample with ethanol and look for formation of an emulsion
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What is cholestrol?
A sterol
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Where in the body is cholestrol produced?
The liver and intestines
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If there are no double bonds the lipid is...
saturated
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What does the presence of double bonds cause in lipids?
Causes the molecule to kink or bend
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What are phospholipids made up of
Carbon, hydrogen, oxygen and phosphorus
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The head of a phospholipid is...
Hydrophilic
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The tail of a phospholipid is...
Hydrophobic
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Other cards in this set

Card 2

Front

What is the fatty acid if the hydrocarbon chain has more than one double bond?

Back

Polyunsaturated

Card 3

Front

What are sterols?

Back

Preview of the front of card 3

Card 4

Front

What is the test for lipids?

Back

Preview of the front of card 4

Card 5

Front

What are the main groups of lipids?

Back

Preview of the front of card 5
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