Cyanide for enzymes act as:

Explanation

Option A: A substrate is a molecule that an enzyme works on. Enzymes are proteins that help to speed up chemical reactions in the body. They do this by binding to the substrate and forming an enzyme-substrate complex. The enzyme then changes the shape of the substrate, which allows it to react with other molecules. Option B: A prosthetic group is a non-protein molecule that is attached to an enzyme. Prosthetic groups are often metal ions, such as iron or copper. They are required for the enzyme to work properly.Option C: A cofactor is a metal ion or other small molecule that is required for an enzyme to work. Cofactors are not permanently attached to the enzyme, but they do bind to the enzyme during the reaction. Option D: Cyanide acts as an inhibitor for enzymes. Enzymes are proteins that help to speed up chemical reactions in the body. Cyanide binds to an enzyme called cytochrome c oxidase, which is responsible for carrying oxygen to the cells. When cyanide binds to cytochrome c oxidase, it prevents the enzyme from working, which can lead to cell death.Cyanide is a very potent poison, and even small amounts can be fatal. It is important to know the signs and symptoms of cyanide poisoning, so that you can seek medical attention if you are exposed.