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24 Cards in this Set
- Front
- Back
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What are the four classes of lipids?
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Fatty Acids
Glycerides Complex lipids Nonglycerides |
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what are the two classes of fatty acids?
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Saturated and Unsaturated
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What are the two clases of Glycerides?
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Neutral and Phosphoglycerides
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What are the two classes of complex lipids?
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Lipoprotein and Glycolipids
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What are the two classes of nonglycerides?
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shingolipids
steroids waxes |
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what makes up a fatty acid? How many carbons can be expected.
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long chain of MONOCARBOCYLIC ACIDS.
12-24 carbond; Have an even number of carbons |
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what is the difference between the two classes of fatty acids (saturated and unsaturated)?
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Saturated has no double bonds (Saturated with Hydrogen)
Unsaturated has double bonds |
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What physical property do we see as a result of saturated vs. unsaturated fats having or lacking a double bond?
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unsaturated fats have cis double bond which causes kinks in the fatty acids not allowing it to solidify. At room temeperarure, therefore, saturated fats are solids while unsatrurated fats are liquids.
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Do saturated fats have higher or lower melting points?
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Higher. The stacked fatty acids are much higher to melt than unsaturated structures with kinks.
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what molecular forces are at play when we say that unsaturated fats cannot solidify?
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Weak Van der Waals interactions dont allow saturated fats to pack tightly and therefore they have a lower melting point.
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what makes up a fatty acid? How many carbons can be expected.
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long chain of MONOCARBOCYLIC ACIDS.
12-24 carbond; Have an even number of carbons |
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what is the difference between the two classes of fatty acids (saturated and unsaturated)?
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Saturated has no double bonds (Saturated with Hydrogen)
Unsaturated has double bonds |
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What physical property do we see as a result of saturated vs. unsaturated fats having or lacking a double bond?
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unsaturated fats have cis double bond which causes kinks in the fatty acids not allowing it to solidify. At room temeperarure, therefore, saturated fats are solids while unsatrurated fats are liquids.
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Do saturated fats have higher or lower melting points?
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Higher. The stacked fatty acids are much higher to melt than unsaturated structures with kinks.
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what molecular forces are at play when we say that unsaturated fats cannot solidify?
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Weak Van der Waals interactions dont allow saturated fats to pack tightly and therefore they have a lower melting point.
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What is the biological relevance of TRIACYLGLYCEROL?
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used primarily as an energy reserve.
- whereas carbs supply rapid release energy, fats provide twice the energy per gram as carbs. |
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The hydrolysis (breakdown; catabolic) of triacylglycerides yields...
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Glycerol and Carboxylate salts
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Glycerol + Fatty acids =
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Glyceride
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May have more than 1 fatty acid in which case glyceride molecules are called
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monoglyceride
diglyceride triglyceride |
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Trans fats are more likely to have a ___________ orientation when the double bond is set.
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Trans. Realize this means that Trans fats have reversible hydrogenation.
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3 possible reactions with fatty acids are
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Esterification
hydrolysis acid-base |
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what are the products of fatty acid esterification?
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Ester and water
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what are the products of fatty acid hydrolysis?
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Carboxyllic acid and an alcohol
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Soaps are
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long chians of carboxyllic acids.
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