Phospholipids and Derived Lipids
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Questions and Answers

What is the precursor of all other steroids in animals?

  • Squalene
  • Glycerol
  • Cholesterol (correct)
  • Fatty acids
  • Which compound lipid is esterified to phosphoric acid at C-3 of the glycerol backbone?

  • Squalene
  • Triacylglyceride
  • Cholesterol
  • Phospholipid (correct)
  • What property of fatty acids increases with increasing molecular weight due to more van der Waals interactions?

  • Presence of double bonds
  • Degree of unsaturation
  • Cis configuration
  • Melting point (correct)
  • Which lipid is added to foods like mayonnaise to prevent the separation of aqueous and fat components?

    <p>Phospholipid</p> Signup and view all the answers

    What configuration do the double bonds in unsaturated fatty acids generally have?

    <p>Cis configuration</p> Signup and view all the answers

    Which member of the steroid family is the most abundant in animals?

    <p>Cholesterol</p> Signup and view all the answers

    What is the main structural material of beehives?

    <p>Beeswax</p> Signup and view all the answers

    Which of the following is NOT a function of fat in the body?

    <p>Transport oxygen in the blood</p> Signup and view all the answers

    Which type of lipid is composed of esters of fatty acids with glycerol?

    <p>Simple lipids</p> Signup and view all the answers

    What are compound lipids?

    <p>Esters of fatty acids with alcohol and posses additional group</p> Signup and view all the answers

    What are derived lipids?

    <p>Derived from simple or compound lipids through hydrolysis or other processes</p> Signup and view all the answers

    Which lipid type includes fats in their liquid state?

    <p>Simple lipids</p> Signup and view all the answers

    Which type of fatty acids need to be included in the diet because they cannot be synthesized?

    <p>Omega-3 and omega-6 fatty acids</p> Signup and view all the answers

    What is the common name for 18:3Δ9,12,15 numerical symbol?

    <p>α-Linolenic acid (ALA)</p> Signup and view all the answers

    What causes oxidative rancidity in foods and cosmetic products?

    <p>Exposure to air, light, or moisture</p> Signup and view all the answers

    Which process modifies lipids and can be detected in foods rich in fats or oils?

    <p>Rancidity</p> Signup and view all the answers

    What are omega-3 and omega-6 fatty acids transformed into in the body?

    <p>Eicosanoids</p> Signup and view all the answers

    What type of reaction causes polyunsaturated fats and oils to become rancid?

    <p>Radical chain reaction with O2</p> Signup and view all the answers

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