1)-Would prolyl hydroxylase be more likely to have a magnesium or a cobalt center?
a-Magnesium, because it is commonly found in the extracellular matrix.
b-Magnesium, because it is divalent and readily bonds to other molecules.
c-Cobalt, because it is commonly found in hydroxylases.
d-Cobalt, because it can exist in multiple redox states and is more similar to iron.