Measuring Enzyme-Catalysed Reactions (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are the two essential requirements for an enzyme to function effectively?
What are the two essential requirements for an enzyme to function effectively?
Physical contact & correct active site
What does monitoring the time-course of a reaction involve?
What does monitoring the time-course of a reaction involve?
Tracking reaction progress over time
Which example demonstrates product formation measurement?
Which example demonstrates product formation measurement?
Measuring O₂ from catalase reaction
What trend appears on graphs when measuring substrate disappearance over time?
What trend appears on graphs when measuring substrate disappearance over time?
Downward trend as substrate consumed
Why does the initial phase of enzyme reactions show a steep slope on graphs?
Why does the initial phase of enzyme reactions show a steep slope on graphs?
High substrate & available active sites
What causes enzyme-catalysed reactions to slow down progressively over time?
What causes enzyme-catalysed reactions to slow down progressively over time?
Substrate depletion & product buildup
What indicates that an enzyme-catalysed reaction has reached completion on a graph?
What indicates that an enzyme-catalysed reaction has reached completion on a graph?
Graph plateau (horizontal asymptote)
How does product formation measurement appear on time-course graphs?
How does product formation measurement appear on time-course graphs?
Shows an upward trend
Why does substrate depletion reduce the reaction rate?
Why does substrate depletion reduce the reaction rate?
Fewer molecules mean less collisions
Which factor must remain constant when measuring enzyme reactions in the laboratory?
Which factor must remain constant when measuring enzyme reactions in the laboratory?
Temperature, pH & environment