How do u dm some one on here

what you mean?

have a good day

Explanation:

Ok so u have to answer questions 1st and when u have enoght u can text people but if that have enoght them yall maybe not text oh and btw u have to go to their pfp (profile) and then there gonna be this thing where is says to send a sum like that, tell me f u need more help so can try to explain  more      

Explanation:

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

i won't lie i don't know so go online and ask google thats what i do