Page 78 - Demo 1

blood cells, cells that line the kidney tubules and the intesnal wall, and plant
root cells all use pinocytosis to ingest substances.

Exocytosis is the type of vesicle transport that moves a substance out of the
cell. A vesicle containing the substance moves through the cytoplasm to the
cell membrane. Then, the vesicle membrane fuses with the cell membrane,
and the substance is released outside the cell. For example, digesve enzymes
and hormones use molecules transported out of the cell by exocytosis.

Figure 38. In exocytosis, macromolecules are transported out of the cell.
In endocytosis, large molecules are taken in by the cell through vesicle
formaon.

Learning Tasks and A ssesment

Acvity 1. Fill in the table with the required informaon about the different

types of cell transport.

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