Rate of an Enzyme Controlled Reaction (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 causes milk to become colourless when trypsin is added?
What causes milk to become colourless when trypsin is added?
Casein protein is hydrolysed
If mean hydrolysis time at 30°C is 4.5 min, what is the rate of reaction?
If mean hydrolysis time at 30°C is 4.5 min, what is the rate of reaction?
What type of enzyme is trypsin?
What type of enzyme is trypsin?
Protease
Why is distilled water added to one tube in the control samples?
Why is distilled water added to one tube in the control samples?
Shows no enzyme activity (negative control)
Why does reaction rate increase as temperature rises from 10°C to optimum?
Why does reaction rate increase as temperature rises from 10°C to optimum?
More kinetic energy causes more collisions
Why does reaction rate decrease beyond the optimum temperature?
Why does reaction rate decrease beyond the optimum temperature?
Active site shape changes, losing fit
Why must samples equilibrate for 5 minutes in the water bath?
Why must samples equilibrate for 5 minutes in the water bath?
To reach target temperature
What safety precaution should be taken when using hydrochloric acid?
What safety precaution should be taken when using hydrochloric acid?
Wear eye protection
What should be plotted on the axes when graphing results?
What should be plotted on the axes when graphing results?
Rate of reaction vs temperature
How can reliability of results be improved?
How can reliability of results be improved?
Conduct multiple repeats and find means