Author: Louphelia B. Mathis -
Thurgood Marshall Middle School- Camp Springs, MD
Western Maryland College - Westminster, MD
Summer - June - 1999
Grade Level: 7 - 8
Duration: 45 minutes
BACKGROUND INFORMATION: Facilitated transport is a cell that takes in molecules that are too large to pass through the cell membrane. Therefore, these cells need a protein carrier molecule of ATP to pull the molecules through the cell membrane. Each carrier molecule only helps one kind of molecules through the cell membrane. Some molecules, glucose, are too large to move quickly through the cell membrane, so a carrier helps speed up their movement. This process is opposite of diffusion. This requires energy, ATP. The movement is in the direction of the lowest concentration to the highest concentration.
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This diagram maybe constructed by students to visualize the carrier pulling larger particles through the cell membrane (ATP).
For other resources click in to the following WEB SITES:
Cell Membrane Transport:Facilitated Diffusion Animation
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