Only pertain to exchanges and interactions that occur within the atmosphere.
<span>a) the active site is a site on the enzyme molecule where specific substrate molecules bind.
because an active site is </span><span>a region on an enzyme that binds to a protein or other substance during a reaction.
hope this helps :) brainliest? i really need one! </span>
<span>Materials are anything consumed in the experiment; water or salt for example.
Apparatus would be such items as beakers and thermometers; things that are not consumed; things that you would expect to find in a lab as standard equipment </span>
