Question

all enzymes are __________. multiple choice cofactors proteins lipids carbohydrates nucleic acids

Explanation:

Enzymes are biological catalysts. Most enzymes are proteins, although some RNA - based enzymes (ribozymes) exist. But traditionally and predominantly, enzymes are proteins. Cofactors are non - protein components that may assist enzymes. Lipids, carbohydrates, and nucleic acids are different classes of biological macromolecules not related to the general nature of enzymes.

Answer:

proteins