How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

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