In the second step of the proposed mechanism for enolase catalysis, glutamic acid in position 211 acts as a(n) and a proton to the intermediate molecule, resulting in the formation of phosphoenolpyruvate.

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?