Proteins: Enzymes (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 does the induced-fit model describe?
What does the induced-fit model describe?
Dynamic enzyme-substrate interaction
In the induced-fit model, is the active site initially complementary to the substrate?
In the induced-fit model, is the active site initially complementary to the substrate?
No, not complementary
What happens during the conformational change stage?
What happens during the conformational change stage?
Active site moulds around substrate
What analogy is used to explain the induced-fit model?
What analogy is used to explain the induced-fit model?
Sock and foot
How does the lock-and-key model differ from the induced-fit model?
How does the lock-and-key model differ from the induced-fit model?
Lock-and-key has rigid active site
What reaction does hexokinase catalyse?
What reaction does hexokinase catalyse?
What technique was used to study hexokinase's shape changes?
What technique was used to study hexokinase's shape changes?
X-ray diffraction
What did X-ray diffraction reveal about hexokinase binding?
What did X-ray diffraction reveal about hexokinase binding?
Active site changed shape significantly
How does the induced-fit model explain catalytic efficiency?
How does the induced-fit model explain catalytic efficiency?
Shape change optimises positioning
Why is the induced-fit model now favoured?
Why is the induced-fit model now favoured?
It better explains observations