True: Enzymes are made of protein, Enzymes speed up a chemical reaction, Enzymes are unchanged at the end of a reaction, Enzymes are specific to their substrate, Enzymes are essential for biochemical reactions, Enzymes lower the activation energy required for a reaction., All enzymes are catalysts., False: Enzymes do not affect the rate of reation, Enzymes can bond with many different substrates, Enzymes are made of cells, Enzymes breakdown after each reaction, Enzyme are made of monosaccharides., Enzymes contain glycerol and fatty acids., All catalysts are enzymes.,

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