Asmall complex organic molecule, often derived from vitamins, that acts in conjunction with an enzyme with an enzyme is known as a(n):

Coenzymes

Explanation:

Coenzymes are the small organic molecules that are often derived from the vitamins. It can be tightly or loosely bond to the enzymes.

Tighly bond ones are the prothestic groups and loosely bond ones are coenzymes like the products and substrate which binds to the enzyme and get released from it.

This component is very important for any reaction to take place. It bonds to the enzymes and helps in product formation.