3. What organisms can phenylalanine hydroxylase be found within? Describe the resulting product and why it is important for
the organism that uses it.
4. Why are the reactants (substrates) changed? Are they harmful in some way? Are they needed to produce
something important? Draw a picture of the substrates.
5. What would happen if phenylalanine hydroxylase did not exist?
6. Why is it important for enzymes to remain unchanged after the product is made?
2 answers