Respuesta :

Answer: 1) They are made up of protein. 2) They do not used up in reaction. 3) They speed up the reaction. 4) They are specific in action.

Explanation:

Enzymes are biological catalysts. They speed up reactions although they are not changed in the reaction.

Enzymes are proteins, and therefore are folded chains of amino acids with a specific shape. This shape is determined by the sequence of amino acids held together by bonds, for example Hydrogen bonds.