Structure, Functions, and Uses (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of molecule are enzymes?
What type of molecule are enzymes?
Specialised proteins
Which model explains enzyme specificity?
Which model explains enzyme specificity?
Lock-and-key model
What is the specifically shaped region where substrate molecules bind to an enzyme called?
What is the specifically shaped region where substrate molecules bind to an enzyme called?
Active site
What is the optimal temperature for human enzymes?
What is the optimal temperature for human enzymes?
37°C
What happens when high temperatures cause an enzyme's protein structure to unfold?
What happens when high temperatures cause an enzyme's protein structure to unfold?
Denaturation
What is the optimal pH for pepsin, which works in the stomach?
What is the optimal pH for pepsin, which works in the stomach?
pH 2
What happens to reaction rate at high substrate concentrations?
What happens to reaction rate at high substrate concentrations?
It plateaus due to saturation
How does increasing enzyme concentration affect reaction rate if substrate is sufficient?
How does increasing enzyme concentration affect reaction rate if substrate is sufficient?
Linear increase in rate
Which enzyme breaks down pectin in fruit to produce clearer juices?
Which enzyme breaks down pectin in fruit to produce clearer juices?
Pectinase
Which enzyme is used to make biodiesel from plant oils?
Which enzyme is used to make biodiesel from plant oils?
Lipase
What happens to an enzyme after it catalyses a reaction?
What happens to an enzyme after it catalyses a reaction?
It remains unchanged and can be reused
What is a key advantage of immobilised enzymes?
What is a key advantage of immobilised enzymes?
They can be reused repeatedly