An enzyme is a type of protein that is made of [blank] .

Nucleotides
Fatty chain acids
Amino acids
Monosaccharides

Amino acids

An enzyme is a type of protein that is made of amino acids.

To determine the correct answer to the question, we need to understand the nature of enzymes and the composition of proteins.

Enzymes are proteins that function as catalysts in biological reactions. They help facilitate chemical reactions in living organisms by speeding up the rate of those reactions. Proteins, on the other hand, are large molecules made up of smaller building blocks called amino acids.

Therefore, the correct answer is: Amino acids. Enzymes, being proteins, are composed of amino acids. Each enzyme molecule is made up of a specific sequence and arrangement of amino acids, which gives it its unique structure and function.

So, the answer to the question "An enzyme is a type of protein that is made of [blank]" is amino acids.