NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they are proteins
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they react with a multiple substrate
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they are affected by changes in temperature
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they act as a catalyst
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Detailed explanation-1: -Enzyme activity is not regulated and thus it is not characteristic of an enzyme.
Detailed explanation-2: -The correct answer: The factor which does NOT affect enzyme activity is d. Free Energy.
Detailed explanation-3: -Explanation: Activity decreases because temperature affects the conformation of the protein and the enzyme’s active site. The temperature does not affect the formation of amino acids in the enzyme.
Detailed explanation-4: -Several factors affect the rate at which enzymatic reactions proceed-temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.
Detailed explanation-5: -It is a protein and therefore, gets destroyed by heating. It acts only on one kind of substance called the substrate. It acts as a catalyst, so it can be used again and again. It only affects the rate of a chemical reaction. More items