Enzymes (AQA GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of molecule are enzymes?
What type of molecule are enzymes?
Protein molecules
What is the name of the part of an enzyme where the substrate binds?
What is the name of the part of an enzyme where the substrate binds?
Active site
In the lock-and-key theory, what does the substrate represent?
In the lock-and-key theory, what does the substrate represent?
The key
What does it mean when an enzyme is denatured?
What does it mean when an enzyme is denatured?
It stops working completely
What is the optimum temperature for human enzymes?
What is the optimum temperature for human enzymes?
Around
Why do enzymes work faster at higher temperatures?
Why do enzymes work faster at higher temperatures?
Molecules move faster and collide more
What happens to an enzyme's shape when the pH is too high or too low?
What happens to an enzyme's shape when the pH is too high or too low?
Shape changes and it gets denatured
Where do enzymes work best in acidic conditions?
Where do enzymes work best in acidic conditions?
In the stomach
Where is bile made?
Where is bile made?
In the liver
Why does bile breaking fat into droplets help digestion?
Why does bile breaking fat into droplets help digestion?
Gives lipase bigger surface area