(1) Catalyst, (2) substrate, (3) active site, (4) activation energy, (5) induced fit, (6) cofactor, (7) denature. An example of an enzyme is carbonic anhydrase, which facilitates the reversible reaction involving water and carbon dioxide to produce carbonic acid. While this reaction typically proceeds slowly, it is expedited in the body, aiding in pH regulation of blood and assisting in the removal of carbon dioxide from tissues.
There are no h orbitals; the highest level of filling for electronic configurations is limited to the f subshell. This particular subshell can hold a maximum of 14 electrons with varying quantum energies across their respective orbitals.