Chemical reactions<span> often involve changes in </span>energy<span> due to the breaking and formation of bonds. </span>Reactions<span> in which </span>energy is released<span> are exothermic </span>reactions, while those that take in heat energy<span> are endothermic.</span>
Answer and Explanation:
Why does enzyme activity plateau as substrate concentration increases?
Simple. The enzyme is saturated, now all available enzyme molecules are busy processing substrates.
try A or b, they both have a membrane i belive
