Question

50 POINTS ANSWER ASAP PLZ!! A student draws a fence with several gates as part of a model of cellular transport. Explain what the fence and the gates represent, relating their structures to their functions. Explain how the model could represent both active transport using protein pumps and facilitated diffusion.

Answer 1

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* The fence represents the phospholipid bilayer.

* Some things would be small enough to wiggle through the fence, just like some small, uncharged molecules can diffuse through the phospholipid bilayer.

* The gates represent transport proteins.

* The transport proteins have different roles in transport.