Cell Membrane Structure and Function Quiz
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Questions and Answers

What is the structure of the plasma membrane?

  • Consists of two layers of phospholipids with embedded proteins and sugars (correct)
  • Consists of a single layer of cholesterol with embedded proteins and sugars
  • Consists of two layers of cholesterol with embedded proteins and sugars
  • Consists of a single layer of phospholipids with embedded proteins and sugars

    • What do membrane proteins provide?

  • Channels for passage of large cellular structures
  • Channels for passage of electrolytes and non-lipid soluble substances (correct)
  • Channels for passage of water molecules only
  • Channels for passage of only lipid soluble substances

    • What do some membrane protein molecules have attached to the outside of the cell?

  • Protein molecules
  • Lipid molecules
  • Branched carbohydrate molecules (correct)
  • Nucleic acid molecules

    • What is the arrangement of the phospholipid bilayer in the plasma membrane?

    <p>Hydrophilic heads aligned on the outer surfaces, hydrophobic tails forming a central layer</p> Signup and view all the answers

    What do membrane proteins act as for hormones and other chemical messengers?

    <p>Receptors (specific recognition sites)</p> Signup and view all the answers

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