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Question
Which of the following statement is true for enzymes?
Options
They lower the activation energy of a reaction by raising the energy level of the product
They can be steroids instead of proteins
They do not affect the free energy change between substrate and product
They lower the activation energy of a reaction by raising the energy of the substrate
Solution
They lower the activation energy of a reaction by raising the energy of the substrate.
Explanation:
Biochemical reactions are sped up by enzymes, a biological catalyst. To create a transition state, they bind to the substrate. The transition state is stabilised and the reaction's activation energy is reduced by strong binding to the transition state. Because a transition state is formed and less activation energy is needed, reactions catalysed by enzymes proceed at a higher rate. This modification is the result of what appears to be an increase in substrate molecule energy level.
