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The flashcards below were created by user
see.jerald
on FreezingBlue Flashcards.
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What are lipids?
they are diverse compounds that are grouped together because of one trait, they mix poorly with water
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Are lipids hydrophilic or phobic?
phobic
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What are in feathers that helps birds stay afloat?
oil
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What are oils?
liquid fat
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what is a fat
a large lipid made from two smaller kinds of smaller molecules: glycerol and fatty acids
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What is a glycerol?
a glycerol is an alcohol with three carbons, each bearing a hydroxyl group
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What is a fatty acid?
consists of a carboxyl group and a hydro carbon chain
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How are the carbons in the fatty acid chain linked together and hydrogen atoms?
By non polar covalent bonds, making the hydrocarbon chain hydrophobic
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what is the main function of fat?
energy storage
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A gram of fat is equivalent to ?
a gram of polysaccharide such as starch
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Why is it better for an animal to store fat as a polysaccharide such as starch?
other forms of carbohydrates are bulkier
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What other functions do fats have?
to insulate the body, and cushions vital organs
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How can a fatty acid molecule link to a glycerol molecule?
dehydration synthesis
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What is a synonym for fat?
tryglyceride
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Why is fat also called a tryglyceride?
the 3 fatty acides
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Are fatty acids only able to form 1 bond?
no, they can do 2
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What causes kinks or bends in the carbon chain?
fatty acids containing double bonds
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What does it mean to be unsaturated?
Fatty acids and fats with double bonds in the carbon chain
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What does it mean to have less than the maximum number of hydrogens?
unsaturated
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What do the kinks in unsaturated fats do?
prevent the molecules from packing tightly together and solidifying at room temp
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what does hydrogenation do?
also creates transfat that associates with heart disease.
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