Midterm 2 Biochemistry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Lipids | Hypdrophobic biomolecules with at lease one hydrophilic moiety.
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| What are some of the functions of lipids? | Membrane components, energy storage, hormones, structure
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| Fatty acids | Unbranched hydrocarbons with a carboxylate; zero or more unsaturations
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| T or F: Fatty acids are usually conjugated | False
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| Why are fatty acid concentrations generally low? | They can easily disrupt membranes.
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| Trans fatty acids are caused by ______. | hydrogenation
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| ______ fatty acids are more flexible. | Saturated
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| T or F: Triacylglycerols are neutral lipids. | True
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| T or F: Triacylglycerols are a mix of both saturated and unsaturated fatty acyl chains. | True
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| Catabolism | The breakdown of large to small molecules, releasing energy
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| The presence of _____ enable storage of triacylglycerides. | bile salts
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| _______ are the primary component of membranes. | Glycerophopholipids
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| Glycerophospholipids are categorized by what? | Polar head group and fatty acyl chains
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| ______ forms a kink in the fatty acyl chain of glycerophospholipids. | Unsaturation
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| Plasmalogens | A component of membranes but have an ether linkage rather than an ester linkage.
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| T or F: Sphingolipids are found in bacteria | False
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| T or F: Sphingolipids are more hydrophobic than phospholipids. | True
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| Gangliosides | Surface markers for cell recognition and communication.
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| T or F: Isoprenoids are non fatty acid based. | True
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| Steroids are derived from _______. | cholesterol
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| Eicosanoids | Oxygenated derivatives of C20 polyunsaturated fatty acids.
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| T or F: Eicosanoids are used in pain relievers. | True
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