The origin of replication (also called the replication origin) is a particular sequence in a genome at which replication is initiated.
It is the interaction of two or more substances, resulting in chemical changes in them. Chemical reactions take place when some kind of energy is supplied to them. The supplied energy may be in the form of heat, light or mechanical shaking for proper contact between the reactant molecules or electricity.
The enthalpy (heat) for an exothermic reaction must be negative because more energy is released when the products are formed than is used when the reactants are broken up. Dexielene Villanueva Â· 1 year ago.