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Understanding Transport Mechanisms in Cells: Active vs. Passive Transport

This overview explores the fundamental concepts of cellular transport mechanisms, focusing on active and passive transport. It explains how energy is used in active transport to move substances, while passive transport relies on diffusion and osmosis without energy expenditure. Key processes discussed include the roles of channel proteins, ATP, endocytosis, vesicles, and exocytosis in moving small and large particles across the cell membrane. Understanding these concepts is essential for grasping how cells interact with their environment and maintain homeostasis.

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Understanding Transport Mechanisms in Cells: Active vs. Passive Transport

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Presentation Transcript

  1. Transport Vocabulary Practice

  2. Active Transport

  3. Requires energy to move substances across the membrane. -Small & large particles

  4. ATP

  5. The energy used by cells.

  6. Diffusion

  7. The movement of small particles from high to low concentration. Does NOT use energy.

  8. Channel Protein

  9. A protein that serves as a passage way through the membrane in active transport.

  10. Osmosis

  11. The diffusion of water.

  12. Passive Transport

  13. The movement of particles across a membrane withOUT using energy. -Small particles

  14. Endocytosis

  15. Bringing large particles into the cell using a vesicle.

  16. Vesicle

  17. A packet of membrane that carries large particles into and out of a cell.

  18. Exocytosis

  19. Bringing large particles out of the cell.

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