Organic protein catalysts are called:
carbohydrates
amino acids
enzymes
lipids

Organic protein catalysts are called as enzymes.

enzymes

Explanation:

Enzymes are a kind of proteins present in organisms. It acts as catalyst in performing different chemical reactions inside the organisms or cells. The enzymes can bind smaller molecules.

It can also break larger molecules into smaller size depending upon the organs where the reaction should be taking place or the place which absorb chemical element.

As the enzymes are made up organic compounds in a long chain, it falls in the category of proteins. It helps to reduce the activation energy to speed the chemical reaction, they are termed as organic protein catalyst.