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Cellular Transport

Cellular Transport. Cellular Transport. Two kinds: 1. Passive Transport (no energy required) A. Diffusion B. Osm0sis 2. Active Transport (Requires energy, ATP) A. Endocytosis B. Exocytosis. Diffusion.

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Cellular Transport

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  1. Cellular Transport

  2. Cellular Transport • Two kinds: 1. Passive Transport (no energy required) A. Diffusion B. Osm0sis 2. Active Transport (Requires energy, ATP) A. Endocytosis B. Exocytosis

  3. Diffusion The net movement of a substance (molecules) down a concentrationgradientfrom an area of highconcentrationto an area of lowconcentration.

  4. Osmosis • The movement of water across selectively permeable membranes. • The water moves from a high concentrationto low concentration.

  5. Plasma Membrane • Controls traffic into and out of the cell with phospholipids and transport proteins. • Selectively permeable • The property of biological membranes which allows some substances to cross more easily than others.

  6. Bacteria Food Vacuole White Blood Cell Endocytosis • The energy requiring movement of particles(foreign or natural)into the cell.

  7. Liver Cell Hormones Receptors Exocytosis • Cell secretes macromolecules (proteins and other biochemicals) out of cell.

  8. What’s in a solution? Answer: • solute + solventsolution • NaCl + H20saltwater

  9. Tonicity • Hypertonic (What makes your hyper? Sugar is a solute) • A solution with a greater soluteconcentration compared to another solution.

  10. Tonicity • Hypotonic (A hypo lives in water so more solvent) • A solution with a lower solute concentrationcompared to another solution.

  11. Tonicity • Isotonic • A solution with an equal solute concentrationcompared to another solution.

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