An enzyme is a type of biomolecule that is primarily a protein. Some enzymes can also be made of RNA, known as ribozymes, but the vast majority of enzymes are proteins. Enzymes act as biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

Details about Enzymes as Biomolecules

• Enzymes are proteins composed of amino acid chains which fold into specific three-dimensional structures to form an active site where substrates bind and reactions occur.

• They are highly specific to the reactions they catalyze and are not destroyed during these reactions, allowing them to be reused repeatedly.

• Although proteins form the majority of enzymes, some catalytic RNAs (ribozymes) exist but they are exceptions rather than the rule.

Thus, the biomolecule type that enzymes mostly belong to is protein.