Which is the structure labeled b?
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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

b. to discover aspects of the natural world.

hopefully i .

cell division is not regulated in tumor cells.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it