1. Active Transport Across the Cell Membrane

2. Active Transport
Molecules are moved from an area of low concentration to and area of high concentration
Requires the use of energy and a carrier protein (called a “pump”

3. Endocytosis
Substances are taken into the cell by the formation of in-foldings, or pockets, in the cell membrane
Pocketed portion pinches off, forming a vesicle inside the cell

4. 2 Types of Endocytosis Phagocytosis Pinocytosis “Cell Eating”
Large particles (food, another cell, etc.) are take into the cell
Pinocytosis
“Cell Drinking”
Very small, or liquid particles are taken into the cell

5. Exocytosis Substances exit the cell
Vacuole fuses with the membrane, and are forced outward
Vacuoles are created by the golgi apparatus