NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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speed up the chemical reaction
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have no effect on the rate of the chemical reaction
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slow the rate of the chemical reaction
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keep the rate of the chemical reaction the same
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Detailed explanation-1: -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.
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: -Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Detailed explanation-4: -Enzymes and activation energy A substance that speeds up a chemical reaction-without being a reactant-is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes.
Detailed explanation-5: -raise the temperature; add a catalyst; increase the concentration of reagents; change the aggregate state of reagents, reduce their size (increase the area of contact of substances).