Choose the correct answer from the list below. Not all of the answers will be used.

a. A type of catalysis where the proton donor is not water.
b. substrate analog which reacts with the enzyme
c. An enzyme that temporarily undergoes covalent catalysis as part of its mechanism.
d. A type of enzyme inhibitor where KM is unaltered.
e. The type of reaction catalyzed by proteases.
f. An enzyme that is part of a pigment formation pathway and has a low-temperature optimum.
g. A protease enzyme with a low pH optimum.
h. The inhibitor that binds only to the ES complex and lowers the Vmax and KM.