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Cell Transport

Cell Transport. Honors Biology. Cell transport. Cells transport substances across the cell membrane either without using energy (passive ) or with energy (active ). Passive Transport. 2 Main Types: Diffusion and Osmosis

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Cell Transport

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  1. Cell Transport Honors Biology

  2. Cell transport • Cells transport substances across the cell membrane either without using energy (passive) or with energy (active)

  3. Passive Transport • 2 Main Types: Diffusion and Osmosis • Diffusion - movement of particles (Solute) from area of high concentration to area of low concentration (ex. perfume bottle) • Osmosis- movement of water (Solvent) through a semi-permeable membrane

  4. Passive Transport • Does NOT require energy to move • Both osmosis and diffusion can occur at the same time • Both involve movement from high to low concentration

  5. Osmosis • Osmosis - movement of water from right side of beaker to left will cause water level on left to rise

  6. A third type – Facilitated Diffusion • Large molecules require assistance to pass through the membrane; Transport proteins used; Moves from high to low concentration w/o energy; Resembles tunnels or channels

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