Lipids: Structure, Properties, and Functions
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Questions and Answers

Which type of lipids contains fatty acids?

  • Structural lipids
  • Complex lipids (correct)
  • Derived lipids
  • Simple lipids

What is an example of a derived lipid?

  • Glycolipid
  • Phospholipid
  • Triacylglycerol
  • Cholesterol (correct)

What is the primary function of bile acids?

  • To form membranes
  • To act as signaling molecules
  • To aid in the digestion of fats (correct)
  • To store energy

Which of the following is NOT a type of lipid?

<p>Nucleic acids (D)</p> Signup and view all the answers

What is the function of phospholipases in lipid signaling pathways?

<p>To hydrolyze phospholipids and release signaling molecules (D)</p> Signup and view all the answers

What is the product of phospholipid hydrolysis by phospholipases in terms of signaling lipids?

<p>Diacylglycerol and arachidonic acid (B)</p> Signup and view all the answers

What is the function of bile acids in the intestine?

<p>To act as detergents and emulsify dietary fats (C)</p> Signup and view all the answers

What is the result of phospholipase C hydrolyzing phosphatidylinositol 4,5-bisphosphate (PIP2)?

<p>The release of IP3 and diacylglycerol (A)</p> Signup and view all the answers

What is the function of phospholipase A1 in phospholipid degradation?

<p>To hydrolyze the ester bond at C-1 of glycerol (D)</p> Signup and view all the answers

What is the function of vitamin E in the body?

<p>To function as a biological antioxidant (C)</p> Signup and view all the answers

What is the result of the complete hydrolysis of a glycerophospholipid?

<p>The release of two fatty acids and a glycerol molecule (D)</p> Signup and view all the answers

What is the function of phosphatidylinositol in the body?

<p>To act as an intracellular signal that regulates cell structure and metabolism (C)</p> Signup and view all the answers

What is the function of eicosanoids in the body?

<p>To mediate many diverse biological effects, including inflammation, pain, and fever (B)</p> Signup and view all the answers

What is the function of phospholipase D in phospholipid degradation?

<p>To hydrolyze specific phosphoester bonds (B)</p> Signup and view all the answers

What is the result of the enzymatic oxidation of arachidonic acid?

<p>The formation of eicosanoids, including prostaglandins, thromboxanes, and leukotrienes (B)</p> Signup and view all the answers

What is the function of vitamin K in the body?

<p>To play a role in blood clotting (D)</p> Signup and view all the answers

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