NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the pH of the solution in which the reaction is occurring
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the concentrations of starch and enzyme
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the temperature at which the reaction is taking place
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the wavelength of light illuminating the reaction
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Detailed explanation-1: -The energy required to reach the transition state (the activation energy) constitutes a barrier to the progress of the reaction, limiting the rate of the reaction. Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction.
Detailed explanation-2: -Enzymes are affected by pH and temperature Various environmental factors are able to affect the rate of enzyme-catalysed reactions through reversible or irreversible changes in the protein structure. The effects of pH and temperature are generally well understood.
Detailed explanation-3: -Factors Influencing the Enzyme Activity Enzyme stability in aqueous media is influenced primarily by temperature and pH and to some extent by the presence of the substrate. For enzyme operating in oils and fats, it is still the temperature and pH that are key factors for optimum enzyme activity and stability.