Both aerobic and anaerobic respiration yield a net gain of atp molecules to be used as energy for living things. the processes of would yield the highest number of atp.

the fact that your name is twinkie makes me not wanna you at so im not

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