What is the Difference Between Pinocytosis and Receptor Mediated Endocytosis?
🆚 Go to Comparative Table 🆚Pinocytosis and receptor-mediated endocytosis are both forms of endocytosis, which is a type of active transport that moves particles into the cell. However, there are key differences between the two:
- Selectivity: Pinocytosis is non-selective, taking in various molecules from extracellular fluid, while receptor-mediated endocytosis only responds to specific substrates.
- Surface Area: Pinocytosis increases the surface area of the plasma membrane, whereas receptor-mediated endocytosis decreases the plasma membrane surface area.
Both pinocytosis and receptor-mediated endocytosis involve the formation of vesicles to transport particles into the cell. However, pinocytosis is less selective and increases the surface area of the plasma membrane, while receptor-mediated endocytosis targets specific substrates and decreases the surface area of the plasma membrane.
Comparative Table: Pinocytosis vs Receptor Mediated Endocytosis
Pinocytosis and receptor-mediated endocytosis are both forms of endocytosis, which is the process of taking materials into the cell by forming vesicles. However, they differ in several aspects:
| Pinocytosis | Receptor-Mediated Endocytosis |
|---|---|
| Nonspecific process: endocytic vesicles absorb molecules from the extracellular fluid without specificity | Specific process: endocytic vesicles absorb specific molecules and viruses, recognizing them by receptors located in the cell membrane |
| Increases the surface area of the plasma membrane | Decreases the plasma membrane surface area |
| Uptakes liquids and dissolved nutrients | Uptakes specific molecules, such as proteins and other substances that cannot easily diffuse |
| More energy-efficient than pinocytosis | Less energy-efficient than receptor-mediated endocytosis |
In summary, pinocytosis is a nonspecific process that increases the surface area of the plasma membrane and uptakes liquids and dissolved nutrients, while receptor-mediated endocytosis is a specific process that decreases the plasma membrane surface area and uptakes specific molecules.
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