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Related Flashcards
Cards In This Set
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What are lipids?
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A diverse group of chemicals that include fatty acids, triglycerides and cholesterol.
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What 6 functions to lipids perform within living organisms?
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• Energy source
• Energy Storage • In membranes • Insulation • protection • some hormones |
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What are lipids made up of?
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Glycerol and fatty acids.
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What is the chemcial structure of glycerol?
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 G |
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What is a fatty acid?
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A hydrocarbon chain with an acid group at one end.
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What are the two types of fatty acid?
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Saturated and Unsaturated.
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What is the difference between saturated fats and unsaturated fats?
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Saturated fats are where all possible bonds are made up with hydrogen molecules.
Unsaturated fats are where C=C bonds exist in the fatty acid. |
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What is a charateristic of unsaturated fats, why and are these more common in plants or animals?
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C=C bonds change the shape of the molecule causing molecules to push apart and hterefore become more fluid.
These are more common in Plants. |
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What is a triglyceride?
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A molecule consisting of one glycerole molecule bonded to three fatty acid molecules.
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Why aren't lipids polymers?
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Because they are formed from 3 fatty acid and one glycerol. Not from repeated monomers.
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What is the name for a covelent bond formed in a triglyceride?
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Ester bond.
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What is the name of one glycerole molecule bonded to one fatty acid?
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Monoglyceride.
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Are triglyceride's hydrophilic or hydrophobic?
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Hydrophobic.
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Why is a triglyceride is suitable for its fuction in living organisms?
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They contain twice as much energy as carbohydrates, they do not effect the water potential of the cell because they are insoluble in water and can be stored in large quantities making them ideal long-term energy storage molecules.
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What is a phospholipid made up of?
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One glycerol molecule, 2 fatty acids and a phosphate group.
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