(Solved): 2 Which statements are characteristics of enzymes? 1 Enzymes are not specific. 2 Enzymes speed up c ...

2 Which statements are characteristics of enzymes? 1 Enzymes are not specific. 2 Enzymes speed up chemical reactions. 3 Enzymes have different levels of activity at different pH. 4 Enzymes are chemically changed at the end of the reaction. A 1 and 4 only B 2 and 3 only C 1,2 and 3 only D 2,3 and 4 only