For each of the following pairs, indicate whether they interact via hydrogen bonds (H) or ionic bonds (I), or do not favorably interact (N). Your answer would be a four-letter string composed of letters H, I, and N only, e.g. HNNI.
( ) ATP and Mg²?
( ) Urea and water
( ) Glucose and the enzyme hexokinase (which uses glucose as a substrate)
( ) A phospholipid tail and inorganic phosphate