User:Atcovi/Science/Bulk Transport


 * Bulk Transport - Large particles (or large groups of smaller particles) moving in/out of the cell.

Endocytosis
General term for several types of active transportations into the cell by enclosing them in a vesicle made out of plasma membrane.

Phagocytosis
LIT: Cell eating.

A form of endocytosis... large particles are transported into cell.

EX: "macrophage to engulf a pathogen"/"amoebas"/"white blood cells".

"Single-celled eukaryotes called amoebas also use phagocytosis to hunt and consume their prey" --https://www.khanacademy.org/science/biology/membranes-and-transport/bulk-transport/a/bulk-transport


 * 1) Cell engulfs target particle
 * 2) Pocket with particle pinches off the membrane, forming a food vacuole.
 * 3) Food vacuole fuses with lysosome.
 * 4) Lysosome uses enzymes to break down target particle.
 * 5) Lysosome uses target particle's basic components, like amino acids and sugars, for the cell.

Pinocytosis
LIT: Cell drinking.

Form of endocytosis, cell takes in extracellular fluids.

Exocytosis
external transport mechanism - opposite of "endocytosis".

Materials are transported from the inside of the cell to the outside of the cell.
 * Using vesicles and the plasma membrane.