Passive vs. Active Transport

Passive Transport Does NOT require energy Moves substances from higher to lower concentration

Types of Passive Transport Diffusion - movement of any type of particle from high concentration to low concentration

Types of Passive Transport

Osmosis - movement of water across a selectively permeable membrane from higher to lower concentration

Types of Passive Transport Facilitated Diffusion - movement of molecules across a cell membrane with the help of transport proteins (faster than regular diffusion)

Facilitated Diffusion Animation

Active Transport Energy IS required Moves substances from lower concentration to higher concentration

Types of Active Transport Active transport (general) - substances move from lower to higher concentration {against the concentration gradient}

Types of Active Transport Endocytosis - large molecules are taken into a cell-Phagocytosis = solids taken in “eat”-Pinocytosis = liquids taken in “drink”

Types of Active Transport Exocytosis - large molecules exit the cell

Active Transport Animation

The End!