Cell Membrane Structure and Function
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Questions and Answers

What is the primary function of the cell membrane?

  • Forms a stable barrier between two acqueous compartments
  • Assists in the transfer of molecules across the membrane
  • Regulates the entry and exit of the cell (correct)
  • Supports the cell and helps in maintaining its shape

    • Where is the cell membrane located in an animal cell?

  • Outer most layer (correct)
  • Innermost layer
  • Around the nucleus
  • Between the cytoplasm and nucleus

    • What role does the cytoskeleton play in relation to the cell membrane?

  • Supports the cell and helps in maintaining its shape
  • Acts as a base of attachment for the cytoskeleton (correct)
  • Forms a stable barrier between two acqueous compartments
  • Assists in the transfer of molecules across the membrane

    • What is the composition of the cell membrane?

    <p>Composed of two layers of phospholipids and embedded with proteins</p> Signup and view all the answers

    What does it mean for the cell membrane to be semi-permeable?

    <p>Allows only selected molecules to diffuse across the membrane</p> Signup and view all the answers

    What is the role of the cell membrane in protecting the interior of the cell?

    <p>Regulates what enters and exits the cell</p> Signup and view all the answers

    What is the primary function of the cell membrane?

    <p>To regulate the entry and exit of substances</p> Signup and view all the answers

    Which statement best describes the composition of the cell membrane?

    <p>Composed of two layers of phospholipids and embedded with proteins</p> Signup and view all the answers

    What role does the cytoskeleton play in relation to the cell membrane?

    <p>It provides a base of attachment for the cell membrane in some organisms</p> Signup and view all the answers

    What does it mean for the cell membrane to be semi-permeable?

    <p>It permits only selected molecules to diffuse across the membrane</p> Signup and view all the answers

    Where is the cell membrane located in an animal cell?

    <p>In the outermost layer</p> Signup and view all the answers

    What is the role of the cell membrane in protecting the interior of the cell?

    <p>To allow only selected substances into the cell and keep unwanted substances out</p> Signup and view all the answers

    How does the cell membrane support the cell's structural integrity?

    <p>By providing a stable barrier between two aqueous compartments</p> Signup and view all the answers

    What are some components responsible for giving membranes their flexibility?

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

    What is the primary function of the proteins embedded in the cell membrane?

    <p>To regulate the entry and exit of the cell</p> Signup and view all the answers

    Which characteristic best describes the structure of the cell membrane?

    <p>Double layer of phospholipids with numerous embedded proteins</p> Signup and view all the answers

    What would happen if the cell membrane lost its semi-permeable nature?

    <p>The cell would not be able to regulate water balance</p> Signup and view all the answers

    What role does the stable barrier formed by the cell membrane play in cellular processes?

    <p>It facilitates selective transport and compartmentalization of cellular components</p> Signup and view all the answers

    Which statement best explains the diverse functions of the proteins in the cell membrane?

    <p>The proteins act as channels, receptors, and enzymes, contributing to various cellular processes</p> Signup and view all the answers

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