(Justify your answer by comparing what you saw in your experiment to what you would have expected to see if the enzyme was vs. was not specific for lactose?) 5. As discussed previously, enzymes are normally very specific for their substrate. Can you think of a reason that this may be important? More specically, suppose that lactase was not specific for lactose, and could instead also bind and catalyze the hydrolysis reaction of maltose. If this were the case, what would happen if abundant levels of lactose and maltose were present in a cell? 6. Did lactase activity depend upon the presence of a cofactor(s)? Please justify your answer. 7. Based on the data that you obtained from the lab, would you hypothesize that the lactase used was extracted from human or bacterial cells? Justify your answer 11