Label each animation with the correct directional term

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

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added