Ryan accidentally drops a very heavy object on his foot. in a matter of just a few seconds, he feels a tremendous amount of pain. he experienced the pain quickly because neurons rapidly carried the impulse to the brain. which structure of the neuron is responsible for the quick transmission of a nerve impulse?

If ur on plato, this is the diagram you will see. The answer should be the 3rd one in.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

that scientist would be robert hooke