Cytosis

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Substances can move into and out of the cell without having to pass through the cell-surface membrane. The process of cytosis is important in transporting:

  • large molecules that are too big for the carriers
  • the bulk transport of smaller molecules e.g. water

Endocytosis (movement of substances into the cell)

The cell-surface membrane invaginates (infolds) around substances entering the cell to form a…

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