Active Transport Molecule to be carried

moves molecules from low concentration to moves molecules from low concentration to high high aagainstgainst a concentration gradient, a concentration gradient, requires ATP (energy), and may require requires ATP (energy), and may require transport proteins.transport proteins.

Active Transport

Endocytosis & Exocytosis Endocytosis Movement of large materials INTO the cell.

Part of the cell membrane wraps around the particle and engulfs it.

ExocytosisMovement of large materials OUT OF the cell.

Vesicles from Golgi apparatus wrap around particle, combine with cell membrane, and then expel the particle from the cell.

Endocytosis Phagocytosis:

-“cell eating”

-particles taken into cell

Pinocytosis:-“cell-drinking”

- fluid taken into cell