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Exocytosis - Endocytosis HTML5


The optimal functioning of the cell depends closely on the exchanges between the extracellular and intracellular environments, these are separated from each other by the cell membrane. Among the various mechanisms for transferring molecules on both sides of the membrane are endocytosis and exocytosis.

  • Endocytosis occurs when molecules are transported into a cell. 
  • Exocytosis is when molecules are secreted outside the cell.

Learning goals

  • To describe the mechanism by which certain substances are absorbed or excreted.
  • To understand the value of endocytosis and exocytosis in the functioning of the cell.
  • To illustrate what a lipid bilayer and a transfer mechanism are.

Learn more

Endocytosis allows for the absorption of solutes (e.g. nutrients such as cholesterol), the regulation and recycling of hormonal receptors and/or glucose transport but also viruses, bacteria and…

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