Certain cells have protein channels on them to transport substances across the cell membrane this kind of transport is referred to as

This is called active transport. The proteins use ATP to transport stuff in and out of the cell.

you did not attach the discourse, but i assume it to be the discourse on the origin and basis of inequality among men (the original titile in french is: "discours sur l'origine et les fondements de l'inégalité parmi les hommes"), also know as "second discourse". in this discourse, jean-jacques rousseau emphasizes that private property is the basis of all inequalities.

therefore, what enabled the old regime to maintain as long as it did was private property.

it would lead to upper respiratory infections and pneumonia.