In Molecular Biology there is a technique to start with a little DNA and make a lot. This technique targets particular sections of DNA, where we know what the DNA sequence is on either side of it. Primers and DNA Polymerase are used to amplify a piece of DNA and make a billion or more copies. This technique is known as ?

maybe because its impossible for balloons to lift a whole entire house.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.