Final answer:
Enzyme mechanism descriptions include the active site, the catalytic mechanism, and the role of cofactors or coenzymes. Together these aspects explain how enzymes facilitate biochemical reactions.option d.
Step-by-step explanation:
Descriptions of enzyme mechanisms often contain all of the following: information about the active site, details about the catalytic mechanism, and the role of cofactors or coenzymes. The active site is where the substrate binds and the reaction takes place, shaped not only by the amino acid side chains but by the overall three-dimensional structure of the enzyme. The catalytic mechanism refers to the way enzymes reduce the activation energy of a biochemical reaction, enhancing the rate of the reaction. Lastly, the role of cofactors (inorganic ions or metal ions) and coenzymes (organic molecules, often derived from vitamins), which can be essential for the functioning of some enzymes, is also a key part of understanding how enzymes work.
Enzyme activity can be influenced by various environmental conditions, including temperature, pH, substrate concentration, and the presence of activators or inhibitors.