What class of compounds includes enzymes and antibodies?

The correct answer is proteins, which are a class of compounds that play a crucial role in biological processes. Enzymes and antibodies are both types of proteins that have specific functions within the body.

Enzymes are biological catalysts that facilitate chemical reactions by lowering the activation energy, thus speeding up the process without being consumed in the reaction. They are essential for various metabolic pathways, allowing organisms to carry out necessary biochemical transformations efficiently.

Antibodies, on the other hand, are specialized proteins produced by the immune system. They recognize and bind to specific antigens, such as bacteria or viruses, helping to neutralize or eliminate them from the body. This specialized function is pivotal in protecting the body from infections and diseases.

Overall, proteins are fundamental macromolecules that perform a diverse array of biological functions, making them integral to life.