LIFE SCIENCE

Detailed explanation-1: -Enzymes are proteins that act upon substrate molecules and decrease the activation energy necessary for a chemical reaction to occur by stabilizing the transition state. This stabilization speeds up reaction rates and makes them happen at physiologically significant rates.

Detailed explanation-2: -Enzymes and activation energy A substance that speeds up a chemical reaction-without being a reactant-is called a catalyst.

Detailed explanation-3: -A protein that speeds up chemical reactions in the body.

Detailed explanation-4: -The correct answer: The statement that is false about the enzymes d. A specific enzyme can catalyze a variety of chemical reactions. The enzymes are basically proteins that are produced from the secretory cells.