Cell Membrane Structure and Functions
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Questions and Answers

Which component of the cell membrane is responsible for the selective permeability?

  • Cholesterol
  • Carbohydrates
  • Phospholipids (correct)
  • Proteins

    • What are carbohydrates often found attached to on the extracellular side of the cell membrane?

  • Peripheral membrane proteins
  • Phospholipids
  • Integral membrane proteins
  • Proteins (correct)

    • What is the significance of selective permeability in the cell membrane?

  • It only allows nutrients to enter and waste to exit the cell
  • It enables the cell to regulate its internal environment (correct)
  • It allows all substances to freely enter and exit the cell
  • It prevents the passage of any molecules into or out of the cell

    • Which type of molecules are formed when carbohydrates are attached to lipids on the extracellular side of the cell membrane?

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

    What is the main function of the cell membrane?

    <p>Selective permeability</p> Signup and view all the answers

    What type of molecules are often formed when carbohydrates are attached to proteins on the extracellular side of the cell membrane?

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

    What is the main function of the cell membrane?

    <p>Selective Permeability</p> Signup and view all the answers

    Which component of the cell membrane is crucial for cell signaling?

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

    Which type of proteins are embedded in the lipid bilayer of the cell membrane?

    <p>Integral membrane proteins</p> Signup and view all the answers

    How do phospholipids arrange themselves in the cell membrane?

    <p>With hydrophilic heads facing outward</p> Signup and view all the answers

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