Transcript
VESICLE TRANSPORT
What is Endocytosis?
Materials in the extracellular fluid are engulfed by a vesicle, which then empties its contents in the intracellular fluid
Endocytosis• Pinocytosis: plasma membrane
folds inward, forming a pinocytic vesicle
• Phagocytosis: plasma membrane engulfs the solid material
• Receptor mediated endocytosis: specific molecules bind to specialized receptors
Pinocytosis
• Extracellular fluid• Rich in nutrients
Pinocytosis
Phagocytosis
• Larger particles• Lysosome joins the vesicle, empties
its digestive enzyme to break down the particles
Phagocytosis
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