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Cell Membrane Structure and Function

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Terms in this set (11)

  • Phospholipid bilayer structure
    Composed of hydrophilic heads facing outward and hydrophobic tails facing inward, forming a selective barrier.
  • Function of integral proteins
    Span the membrane and assist in transport and communication across the membrane.
  • Role of peripheral proteins
    Attach to the membrane surface and help with signaling and maintaining the cell's shape.
  • Transmembrane proteins
    Proteins that extend across the membrane, facilitating transport and signal transduction.
  • Cholesterol in the membrane
    Modulates membrane fluidity, making it less permeable to very small water-soluble molecules.
  • Glycoproteins and glycolipids function
    Involved in cell recognition and signaling, important for immune response and cell communication.
  • Selective permeability of plasma membrane
    Allows some substances to pass while blocking others, maintaining internal cell environment.
  • Components of the plasma membrane
    Phospholipid bilayer, proteins, cholesterol, glycoproteins, and glycolipids.
  • Hydrophilic heads of phospholipids
    Face the aqueous environments inside and outside the cell.
  • Hydrophobic tails of phospholipids
    Face inward, away from water, creating a barrier to polar molecules.
  • Plasma membrane main function
    Separates the cell from its environment and regulates substance movement.