Biodiesel is a product made with the aid of a biological catalyst (enzyme).

Here's why:

* Biodiesel production involves transesterification, a chemical reaction where fats or oils are converted into biodiesel.

* Enzymes can act as catalysts in this reaction, speeding it up and making it more efficient.

* Lipase is a common enzyme used for biodiesel production. It breaks down the triglycerides in fats and oils, making them easier to react with alcohol.

So, biodiesel is a great example of a product made using the power of biological catalysts.