Blood Clotting and Lipoproteins Quiz
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Questions and Answers

What is the function of HDL (high-density lipoprotein) in the body?

  • Convert cholesterol into bile acids
  • Scavenge cholesterol from membranes (correct)
  • Package cholesterol for transport in particles
  • Transport cholesterol to tissues
  • Which lipoprotein is responsible for transporting cholesterol from the liver to other tissues?

  • LDL (correct)
  • VLDL
  • HDL
  • IDL
  • Which type of cholesterol is commonly known as the 'bad' cholesterol?

  • HDL
  • VLDL
  • IDL
  • LDL (correct)
  • What is another name for a lipid panel test used to monitor cardiovascular disease risk?

    <p>Lipid profile test</p> Signup and view all the answers

    Which lipoprotein is considered 'good' cholesterol?

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

    Which type of particles bind to cell receptors and allow cells to use cholesterol?

    <p>LDL</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 the compound lipid 20:5Δ5,8,11,14,17?

    <p>Eicosapentaenoic Acid (EPA)</p> Signup and view all the answers

    What causes the taste and smell associated with rancidity in fats or oils?

    <p>Oxidative rancidity</p> Signup and view all the answers

    Which fatty acids are easily oxidized by O2 through a radical chain reaction?

    <p>Polyunsaturated Fats and Oils</p> Signup and view all the answers

    Which process is a major cause of quality deterioration in foods and cosmetic products?

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

    What is the basic difference in structure between phospholipids and triacylglycerides?

    <p>Phospholipids have C-3 of the glycerol backbone esterified to phosphoric acid.</p> Signup and view all the answers

    What do omega-3 and omega-6 fatty acids transform into in the body?

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

    How do lecithins contribute to foods like mayonnaise?

    <p>Prevent aqueous and fat components from separating.</p> Signup and view all the answers

    Which compound is considered the precursor of all other steroids in animals?

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

    Why do saturated fatty acids have higher melting points compared to unsaturated fatty acids?

    <p>Increased van der Waals interactions due to longer hydrocarbon chains.</p> Signup and view all the answers

    What is the role of cholesterol in cell membranes?

    <p>Making cell membranes more rigid.</p> Signup and view all the answers

    How does the presence of double bonds affect the melting point of unsaturated fatty acids?

    <p>It significantly lowers the melting point.</p> Signup and view all the answers

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