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.
8 Reasons Why Chemical Reactions Are Important Chemical reactions are the reason we exist on the Earth, and, of course, they are the reason we are able to ask questions. In addition: