channel protein


a: channel protein ~
b: pet door


These types of proteins are tunnels that selectively control the transport of ions and other molecules into and out of a cell. This is a VERY rough analogy, but they are sort of like a pet door, for say a cat. These doors are very small and allow only small cat to pass through. Large dogs are block by their size. It's much more complicated than that, but this may work for teaching elementary students.

Writer: Lucrezia
Where: Reference Link Has Evaporated
Date: Sep 18 2014 1:06 PM

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