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What does it mean to say a membrane channel is selective? What does it mean when...

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Medical Sciences

What does it mean to say a membrane channel is selective? What doesit mean when we say a membrane channel is gated? Describe twodifferent types of membrane gated channels and explain why we donot always want them open.  

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What does it mean to say a membrane channel is selective Membrane channels are proteins located on the cell membrane which enable the passive movements of ions or molecules Channel proteins are the class of facilitative diffusion which allow the flow of ion or molecules down their concentration gradient Channel proteins form channel like passage which resemble waterfilled pores across the membrane to allow diffusion of ions or simply water as in aquaporins These channel proteins have selective permeability    See Answer
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