Substances that speed up chemical reactions without themselves being altered areGroup of answer choicesvitaminsenzymesacidssubstratesphospholipids
Question
Substances that speed up chemical reactions without themselves being altered areGroup of answer choicesvitaminsenzymesacidssubstratesphospholipids
Solution
The substances that speed up chemical reactions without themselves being altered are enzymes. Enzymes are biological catalysts, meaning they lower the activation energy for a reaction to occur and thus speed up the reaction. They are not consumed in the reaction so they can be used repeatedly.
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