Choice answer D because it is fully correct
He helps her start remebering things better so he is using mind jogging
Answer: The enzyme 's active site binds to the substrate. ... When an enzyme binds its substrate it forms an enzyme-substrate complex. Enzymes promote chemical reactions by bringing substrates together in an optimal orientation, thus creating an ideal chemical environment for the reaction to occur.
Im not sure the answer is there
Gas molecules spread out and don't touch each other.