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The Movement
of Substances
 Across the
   Plasma
  Membrane

  3 . 3 - A p p r e c ia t in g
   The M o ve m e nt o f
 S u b s ta nc e s A c ro s s
        t h e P la s m a
         Me mbra ne
LEARNING
        OUTCOMES
• Explain the necessity of
 movement of substances across
 the plasma membrane which
 occurs in a continuous &
 controlled manner for survival
 of a cell
• Occurs in a continuous & controlled
  manner for the survival of a cell.

• The fluidity of the plasma membrane
  depends on the specific fatty acid &
  cholesterol present and the temperature.

• Unsaturated fatty acids with bend tails
  break up the dense fatty acid packing &
  cause the phospholipids bilayer to be
  more fluid.

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  • 1. The Movement of Substances Across the Plasma Membrane 3 . 3 - A p p r e c ia t in g The M o ve m e nt o f S u b s ta nc e s A c ro s s t h e P la s m a Me mbra ne
  • 2. LEARNING OUTCOMES • Explain the necessity of movement of substances across the plasma membrane which occurs in a continuous & controlled manner for survival of a cell
  • 3. • Occurs in a continuous & controlled manner for the survival of a cell. • The fluidity of the plasma membrane depends on the specific fatty acid & cholesterol present and the temperature. • Unsaturated fatty acids with bend tails break up the dense fatty acid packing & cause the phospholipids bilayer to be more fluid.