Chem 4, College of the Desert

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Mattyj1388
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87503
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Chem 4, College of the Desert
Updated:
2012-05-16 11:49:25
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Chapter24 Chem4
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General ideas, concepts, definitions
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  1. Common Fatty Acids
    • Common Fatty Acids:
    • Saturated
    • Name #of "C" M.P.(oC) Ex:
    • L Lauric 12 44 Cocanut oil
    • M Myristic 14 58 Butter Fat
    • P Palmitic 16 63 Most fats & oil
    • S Stearic 18 70 Most fats & oil Unsaturated (1 or more double bonds)
    • Name #of "C" M.P.(oC) Ex:
    • O Oleic 18 4 Olive Oil
    • L Linoleic 18 -5 Vegetable oil
    • L Linolenic 18 -11 Soybean&Cornola
    • A Arachidonic 20 -50 Lard
  2. Wax
    • Wax: A mixture of monoestersof long-chain carboxylic Acids with long-chain alcohols.
    • (RCOOR') long straight hydrocarbon chain in both R groups: They are secreted by sebaceous glands in the skin of animals and perform mostly external protective functions.
  3. Triacylglycerol
    • Triacylglycerol (Triglyceride): A triester of glycerol with three Fatty Acids (FA).
    • Are carboxylic acid triesters of glycerol, a three-Carbon trialcohol. Triacylglycerols are found as the fats stored in our bodies and in most dietary fats and oils.
    • [Major source of Biochemical energy]
  4. Fat
    Fat: A mixture of triacylglycerols that is solid because it contains a high praportion of saturated Fatty Acids (FA).
  5. Micelle
    • Micelle: A spherical cluster formed by the aggragation of soap or deturgent molecules so that their hydrophobic ends are in the center and their hydrophilic ends are on the surface.
  6. Facilitated Diffusion
    Ficilitated Diffusion: Passive transport across a cell membrain with the assistance of a protein that changes shape.
  7. Eicosanoid
    Eicosanoid: A lipid derived from a 20-Carbon unsaturated carboxylic acid.

    • Not an ESTER!
    • Not an AMIDE!

    [special type of intercellular messanger]
  8. Concentration Gradient
    Concentration Gradient: A differance in consentration within the same system.
  9. Polyunsaturated Fatty Acid
    Polyunsaturated Fatty Acid: A long chain carboxylic acid that has two or more Carbon-Carbon double bonds (C=C).
  10. Saturated Fatty Acid
    Saturated Fatty Acid: A long chain carboxylic acid containing only Carbon-Carbon single bonds (C-C).
  11. Lauric
    • Lauric: Saturated Fatty Acid containing 12 Carbon atoms; has a M.P. of 44oC; It is the "L" in "L"MPS.
    • Example: Cocanut oil
  12. Myristic
    • Myristic: Saturated Fatty Acid containing 14 Carbon Atoms; has a M.P. of 58oC; Is the "M" in L"M"PS.
    • Ex: Butter Fat
  13. Palmitic
    • Palmitic: Saturated Fatty Acid containing 16 Carbon Atoms; has a M.P. of 63oC; is the "P" in LM"P"S.
    • Ex: Most Fats and Oils
  14. Stearic
    • Stearic: Saturated Fatty Acid containing 18 Carbon atoms; has a M.P. of 70oC; is the "S" in LMP"S".
    • Ex: Most Fats and Oils
  15. Oleic
    • Oleic: Unsaturated Fatty Acid containing 18 Carbon Atoms; has a M.P. of 4oC; is the "O" in "O"LLA.
    • Ex: Olive oil
  16. Linoleic
    • Linoleic:Unsaturated Fatty Acid containing 18 Carbon Atoms; has a M.P. of -5oC; is the "L" in O"L"LA.
    • Ex: Vegitable oils
  17. Linolenic
    • Linolenic:Unsaturated Fatty Acid containing 18 Carbon Atoms; has a M.P. of -11oC; is the "L" in OL"L"A.
    • Ex: Soybean & Cornola oils
  18. Arachidonic
    • Arachidonic: Unsaturated Fatty Acid containing 20 Carbon atoms; has a M.P. of -50oC; is the "A" in OLL"A".
    • Ex: Lard
  19. Degree of Unsaturation
    Degree of Unsaturation: The numberof Carbon-Carbon double bonds (C=C) in a molecule.
  20. Fatty Acid
    Fatty Acid (FA): A long-chain carboxylic acid; those in animal fats and vegetable oils often have 12-22 Carbon Atoms.
  21. Oil
    Oil: A mixture of triaclglycerols that is liquid because it contains a high proportion of unsaturated fatty acids.
  22. Liposome
    • Liposome: A spherical structure in which a lipid bilayer surrounds a water droplet (as seen in the picture).
  23. Arachidonic Acid
    • Arachidonic Acid:
  24. Passive Transport
    • Passive Transport: Movement of a substance across a cell membrain without the use of energy, from a region of higher concentration to a region of lower concentration.
  25. Active Transport
    • Active Trasport: Movement of substance across a cell membrane with the assistance of energy (for example, from ATP).
    • [Ratio: 2Kin 3Naout]
  26. Composition of some common Fats and Oils

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