OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It raises the activation energy of the reaction, decreasing the reaction rate
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It lowers the activation energy of the reaction, decreasing the reaction rate
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It lowers the activation energy of the reaction, increasing the reaction rate
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It raises the activation energy of the reaction, increasing the reaction rate
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Detailed explanation-1: -Enzymes lower the activation energy of a reaction-that is the required amount of energy needed for a reaction to occur. They do this by binding to a substrate and holding it in a way that allows the reaction to happen more efficiently.
Detailed explanation-2: -Enzymes speed the reaction, or allow it to occur at lower energy levels and, once the reaction is complete, they are again available. In other words, they are not used up by the reaction and can be re-used. Enzymes are designed to work most effectively at a specific temperature and pH.
Detailed explanation-3: -The correct answer is option ‘a’ catalysts increase the rate of the reaction by reducing the free energy of the transition state, which lowers the activation energy.