Please help, I think the answer is on chegg if you have that
This graph illustrates how an enzyme catalyzes reactions in biological systems. To start a reaction, a certain amount of energy must be absorbed by the reactants. This is called the energy of activation. Which of the following is the normal energy of activation?

a is energy of activation.

Explanation: Because energy of activation is the minimum energy which must be provided to a chemical or nuclear system with potential reactants to result in a chemical reaction, nuclear reaction, or various other physical phenomena.

answer; ///i believe the answer your looking for is (ribosomes);

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.