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Cell Transport

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  • Sometimes __ cannot move straight through the membrane.
    Molecules
  • The concentration of solute on the outside of the cell is __ than the concentration of solute inside the cell inside the cell.
    lower
  • The concentration of the solute on the outside of the cell is __ than the concentration of the solute inside the cell inside the cell.
    higher
  • The __ of the membrane is to regulate what enters and exits the cell to maintain homeostasis.
    Function
  • Moving __ __ __ __ __ of substances into/out of the cell also requires energy.
    large particles or large amounts
  • Instead they use a __.(channel or carrier)
    Protein
  • __ is the process in which cells take in large particles or large amounts of small particles.
    Endocytosis
  • There are substances __ in the water.
    dissolved
  • The cell membrane is a __ __ that is semipermeable.
    Phospholipid bilayer
  • A __ __ uses energy to move molecules from a low concentration to a high concentration.
    protein pump
  • Cell __ refers to movement into and out of the cell.
    Transport
  • All types of __ __ transport require energy.
    active transport
  • __ is the movement of molecules from a high concentration to a low concentration.
    Diffusion
  • __ (or selectively permeable) means that it allows some substances to pass through the membrane but not others.
    Semipermeable
  • Sometimes the cell needs to __ __ __ of and they do this through active transport.
    control the movement
  • __ is the diffusion of water across a semipermeable.
    Osmosis
  • A very important protein pump is the __ __ __.
    sodium potassium pump
  • Active Transport __ need energy.
    does
  • When the concentration of the solution outside the cell is different than inside the cell, water will move in order to have __ __.
    Equal concentrations.
  • Passive transport ___ need energy.
    does not
  • Molecules move __ the concentration gradient.
    down
  • The solute concentrations on the outside of the cell is the __ to the solute concentration inside the cell.
    same
  • __ is a number of molecules of substance in a given area.
    Concentration
  • __ is the process in which cells send materials out of the cell through vesicles that fuse to the membrane.
    Exocytosis
  • What are types of molecules that diffuse through the membrane?
    small, hydrophobic, no charge
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