THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is not a characteristic of enzymes?
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specific to one type of substrate
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may be denatured in extreme temperatures and pHs
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lowers the activation energy of a reaction
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can only be used one time
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Explanation:
Detailed explanation-1: -Enzyme activity is not regulated and thus it is not characteristic of an enzyme.
Detailed explanation-2: -Enzymes are reusable. Once an enzyme binds to a substrate and catalyzes the reaction, the enzyme is released, unchanged, and can be used for another reaction. This means that for each reaction, there does not need to be a 1:1 ratio between enzyme and substrate molecules.
Detailed explanation-3: -Enzyme activity is not regulated. hence it is not characteristic of an enzyme.
Detailed explanation-4: -So, the correct answer is ‘Enzymes are used up in reactions’.
There is 1 question to complete.