Aallosteric regulator the rate of an enzyme-catalyzed reaction by inducing the active site of the enzyme to become

neutrons are in the middle of the atom and the electrons, which are much smaller.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.