NUTRITION
NUTRITION ENERGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
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true
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false
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Enzymes are not reactants and are not used up during the reaction. Once an enzyme binds to a substrate and catalyzes the reaction, the enzyme is released, unchanged, and can be used for another reaction.
Detailed explanation-2: -Enzymes in our bodies are catalysts that speed up reactions by helping to lower the activation energy needed to start a reaction.
Detailed explanation-3: -An enzyme is a biological catalyst. It speeds up a reaction by lowering or reducing the activation energy of the reaction. It can increase the rates of both forward and backward reactions. However, it itself does not take part in the reaction.
There is 1 question to complete.