Essay
Refer to the table below listing protein enzymes found in modern cells.The half-lives of the chemical reactions catalyzed by these enzymes within cells are on the order of seconds to milliseconds or less.The half-lives of these same chemical reactions in the absence of their enzymes are listed in the table.The half-life of a chemical reaction is the time it takes for half of the reactants to be converted to products, so you can use these data to compare the rates of catalyzed reactions to their noncatalyzed counterparts. Can these data be used to justify the need for catalysts in the origin of life? Explain.
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