Unit 1.4 - Vesicular Transport

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6 Terms

1
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Vesicular Transport

For macromolecules that are too large for protein mediated transport.

Uses endoctyosis and exocytosis.

2
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Endocytosis

3 types: receptor-mediated endocytosis, phagocytosis, and pinocytosis.

3
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Receptor-Mediated Endocytosis

Highly selective; requires receptor.

Receptors for specific ligand are found on the extracellular surface of the membrane.

4
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Phagocytosis

Involves engulfing large solid particles (dead/damaged cells, bacteria, viruses, etc).

Uses phagocyctes such as macophages and neutrophils.

Begins when the particle binds to a receptor on the phagocyte.

5
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Pinocytosis

Enclosing the extracellular fluid non-selectively.

No receptor proteins involved.

6
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Exocytosis

Moving cytoplasmic vesicles to the plasma membrane.

Fusing with the plasma membrane to form secretory vesicle.

Release the vesicle contents to the extracellular space.