Large taxonomic groups consisting of related phyla (more than one phylum) are called: A. Domains
B. Kingdoms
C. Species
D. Orders

B

Explanation:

i think that c)gold was found there

but i am not sure

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