1) C. the energy required to start the reaction Enzyme lower the activation energy. 2) C. Reactions in cells would be too slow to sustain life. The reaction of carbonic acid formation in cells takes about a hundred years without enzymes. With enzymes, it takes 3 seconds.</span>
It can't really be codominant since lowercase letters are recessive, and condomance needs 2 dominant alleles of a different types. So really it should be BB for blue, RR for red and BR for patchwork...