Which is correct about the evolutionary relationships among the three domains? a. *Archaea and bacteria are more closely related to each other than to eukaryotes.
b. *Eukaryotes and bacteria are more closely related to each other than to archaea.
c. *Archaea and eukaryotes are more closely related to each other than to bacteria.
d. *They are all the same distance from each other with the same ancestor.
e. *All three evolved from different ancestors.
Not understanding this homework problem. Thanks in advance.

i think it is dna, i'm not totally sure but i think it might be.

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.