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.
As the enzyme concentration increases the rate of enzyme activity increases up to a level where it becomes constant. This is because the more the enzymes are available, the m â¦ ore substrates are broken in less time.ncreasing temperature increases the rate because the substrate has more kinetic energy, so is more likely to collide with the enzyme for the reaction to take place. Too much heat causes the bonds which hold the enzyme in its very specific shape to break, meaning it can no longer function (is denatured).