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Cell membrane
TRANSPORT
Membrane Structure
Passive Transport
Difusion
O Small molecules like
oxygen or carbon
dioxide cross the cell
membrane. They
move towards the
side with less
con...
Osmosis
O It is the difusion of water through the plasma
membrane. Water difuses from the least
concetrated side to the gr...
Active Transport
O Sometimes the cell
needs to take in
molecules that are in
a smaller
concentration in the
exterior. Ther...
Greater particles
Endocytosis
Exocytosis
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Lesson 2 cell membrane and transport

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Lesson 2 cell membrane and transport

  1. 1. Cell membrane TRANSPORT
  2. 2. Membrane Structure
  3. 3. Passive Transport
  4. 4. Difusion O Small molecules like oxygen or carbon dioxide cross the cell membrane. They move towards the side with less concentration in order to equal concentrations.
  5. 5. Osmosis O It is the difusion of water through the plasma membrane. Water difuses from the least concetrated side to the greater concentration side until the concentrations become equal.
  6. 6. Active Transport O Sometimes the cell needs to take in molecules that are in a smaller concentration in the exterior. Therefore, in order to introduce them into the cell, the cell needs to use energy.
  7. 7. Greater particles Endocytosis Exocytosis

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