Final answer:
An enzyme includes an organic molecule known as a coenzyme, which enhances the enzyme's function. Coenzymes are organic helper molecules that are typically derived from vitamins. Coenzymes and cofactors, such as metal ions, are essential for the optimal activity of enzymes.
Step-by-step explanation:
The organic molecule that is part of an enzyme is known as a coenzyme. Coenzymes are organic helper molecules made up of carbon and hydrogen, and they play a critical role in the function and regulation of enzymes. They are often derived from dietary vitamins and participate in reactions without being changed themselves, essentially serving to increase enzyme efficacy, selectivity, and specificity. Enzymes may also require inorganic ions known as cofactors to function optimally. These inorganic ions, such as iron (Fe++) and magnesium (Mg++), help stabilize enzyme conformation. An example is the enzyme DNA polymerase, which requires a bound zinc ion (Zn++) as a cofactor to function properly.