These questions need around a paragraph or two for the answer. For full rating, answer in such manner please.
1) Explain what predictions can you make about the primary structure of an alpha-helical region of a protein that spans a biological membrane?
2) Cells tend to have about ten-fold more Na+ on the outside relative to the inside, whereas the situation with K+ ions is the opposite. Explain how can happen since the collapse of these gradients would be energetically favored? Is there a biochemical advantage to having these ion gradients?