BIOLOGY
ENZYMES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Enzymes are considered biological catalysts because they work in living cells.
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Enzymes, as catalysts, always help slow down the speed of metabolic reactions.
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Enzymes are only essential to the process of digestion.
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Even without enzymes, humans can live their lives normally.
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Enzymes, as catalysts, are used up after helping a reaction.
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Detailed explanation-1: -Like all other catalysts, enzymes are characterized by two fundamental properties. First, they increase the rate of chemical reactions without themselves being consumed or permanently altered by the reaction. Second, they increase reaction rates without altering the chemical equilibrium between reactants and products.
Detailed explanation-2: -Enzymes catalyze the reaction by lowering the activation energy which is required to initiate the reaction. Through this mechanism, the reaction can be catalyzed at a fast rate. Hence, it is the correct option.
Detailed explanation-3: -This statement about enzymes is true: Enzymes accelerate reactions by lowering the activation energy. Enzymes are proteins whose three-dimensional form is key to their function. Enzymes do not alter the overall change in free energy for a reaction.
Detailed explanation-4: -Answer and Explanation: The correct option is c. The rate of the reaction is greater than when the same reaction occurs in the absence of an enzyme.