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Cell Membranes and Transport

Cell Membranes and Transport. Getting material in and out of cells. Transport. Getting material in and out of cells Can be broken into two categories. Passive Transport. Movement of material in/out of cells CELL USES NO ENERGY TO DO SO Diffusion: (From Hi  Lo)

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Cell Membranes and Transport

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  1. Cell Membranes and Transport Getting material in and out of cells

  2. Transport • Getting material in and out of cells • Can be broken into two categories

  3. Passive Transport • Movement of material in/out of cells • CELL USES NO ENERGY TO DO SO • Diffusion: (From Hi  Lo) • Down the concentration gradient.

  4. Active Transport • Cell USES ENERGY to move material in/out cells. • “Up” the concentration gradient: (Lo  Hi) • Uses the protein channels in the cell membrane.

  5. Active Transport • Receptor Mediated Endocytosis – Bringing large molecules or chunky bits into the cell. • Cell surrounds and “engulfs” the material • Phagocytosis – Cellular “eating” • Pinocytosis – Cell “drinking” • The reverse process is called Exocytosis – Cell “Pooping” Animation

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