How does the intensity of facilitated diffusion vary in relation to the concentration of the moved substance ?

How does the intensity of facilitated diffusion vary in relation to the concentration of the moved substance ?
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What is the limiting factor? Likewise simple diffusion facilitated diffusion is more intense when the concentration gradient of the substance increases and less intense when the gradient lessens. In facilitated diffusion however there is a limiting factor: the quantity of the permeases that facilitate the transport through the membrane. Even in a situation in which the concentration gradient of the diffusing substance increases, if there are not enough permeases to perform the transport there will be no increase in the intensity of the diffusion. This situation is called saturation of the transport proteins and it represents the point in which the maximum transport capacity of the substance across the membrane is achieved.    
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How does the intensity of simple diffusion vary in relation to the concentration gradient of the moved substance ?

Description : How does the intensity of simple diffusion vary in relation to the concentration gradient of the moved substance ?

Last Answer : The higher the concentration gradient of a substance the more intense its simple diffusion will be. If the concentration gradient diminishes the intensity of simple diffusion diminishes too.

Without saturation of transport proteins and under same concentration gradient how can the speed of simple diffusion be compared to the speed of facilitated diffusion ?

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Last Answer : answer:

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Last Answer : answer:

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