Cell Transport
Diffusion
Does not Need Energy
Moves Small Molecules
Carbon Dioxide
Oxygen
High to Low Concentration
Osmosis
Does not Need Energy
Moves Small Molecules
Water
Requires a Transport Protein
High to Low Concentration
Facilitated Diffusion
Does not Need Energy
Moves Large Molecules
Glucose
Requires a Channel Protein
High to Low Concentration
Active Transport
Requires Energy
Moves Large/Charged Molecules
Sodium & Potassium
Requires a Protein
Low to High Concentration