Insulin production and its action in the human body are responsible for the level of diabetes. This compound belongs to which of the following categories?
Show Hint
Insulin is a hormone that helps regulate blood sugar levels in the body, which is crucial for metabolic processes.
Step 1: Analyze the function of insulin.
Insulin is a hormone produced by the pancreas that regulates glucose levels in the blood.
Step 2: Conclusion.
Insulin is classified as a hormone, not an enzyme or coenzyme.
Final Answer:
\[
\boxed{\text{A hormone}}
\]