Final review of enzyme concepts.
a. Enzymes are biological catalysts that speed up reactions.
b. They do so by lowering the activation energy.
c. They have an optimal pH and temperature at which they are most active.
d. Co-factors can be organic (prosthetic groups, co-enzymes) or inorganic (metal ions).
e. The protein part of an enzyme is the apoenzyme, and with its co-factor, it forms the holoenzyme.
f. Competitive inhibitors bind to the active site.
g. At Vmax, all enzyme active sites are occupied by substrate molecules.
