A) energy can be transformed into matter, and because of this, something is obtained for nothing
B) energy can be destroyed during nuclear reactions such as those that occur inside the sun
C) if energy is gained by one region of the universe, another place in the universe also must gain energy in order to maintain the balance of nature
D) energy tends to flow from concentrated to less concentrated forms
E) energy tends to be stable over time

A) They consume energy.
B) They require glucose fusion.
C) Their products have more energy than the reactants.
D) They release energy that can be used by cells.
E) They involve the formation of bonds.

A) The enzyme is consumed as the products form.
B) The substrate leaves the active site.
C) The conversion of substrates to products occurs.
D) The product leaves the enzyme.
E) The product decomposes to the reactants.