Biology, 22.01.2021 05:20, dondre54

The hormone adrenaline interacts with proteins located on the surface of cells and does not cross the cell membrane. However, larger steroid molecules, such as estrone, cross cell membranes and interact with proteins located in the cell nucleus. Why is a large steroid molecule able to cross the cell membrane when a smaller molecule such as adrenaline cannot

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The hormone adrenaline interacts with proteins located on the surface of cells and does not cross th...