What makes an enzyme a catalyst?
A.hydrogen peroxide. Catalase is an enzyme that functions in the decomposition of hydrogen peroxide to oxygen and water.
A catalyst is a substance that speeds up a chemical reaction, by lowering the activation energy, and which is not consumed or permanently altered in the process (such that after it has catalyzed the reaction once, it can catalyze the reaction again, and again -- multiple turnover). Catalysts can be as simple as a monatomic ion; they can also be inorganic compounds, non-biological organic molecules, or biological molecules. Biological catalysts are enzymes. Enzymes meet all of the criteria for being a catalyst (speed up chemical reactions, by reducing the activation energy, and are not permanently altered).
It lowers the energy of activation for a specific chemical reaction. Best wishes.
D: it quickens a chemical reaction yet isn't completely replaced by skill of the reaction this is a standard definition of the understanding catalyst that a biologist gave: A chemical/substance that alters the fee of a chemical reaction yet isn't used up interior the technique.
