Enzymes (Edexcel GCSE Biology): Quizzes
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Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What are enzymes?
What are enzymes?
Biological catalysts
What type of molecule are enzymes?
What type of molecule are enzymes?
Proteins
What is the part of an enzyme where the substrate binds called?
What is the part of an enzyme where the substrate binds called?
Active site
How does the substrate's shape relate to the enzyme's active site?
How does the substrate's shape relate to the enzyme's active site?
Complementary
What forms when a substrate binds to an enzyme's active site?
What forms when a substrate binds to an enzyme's active site?
Enzyme-substrate complex
What is the optimum temperature for most enzymes in the human body?
What is the optimum temperature for most enzymes in the human body?
What happens to an enzyme if the temperature gets too high?
What happens to an enzyme if the temperature gets too high?
It becomes denatured
What is the optimum pH for most enzymes?
What is the optimum pH for most enzymes?
7 (neutral)
Where does the protease enzyme pepsin work best?
Where does the protease enzyme pepsin work best?
In acidic conditions
What does amylase break down starch into?
What does amylase break down starch into?
Maltose
What do proteases convert proteins into?
What do proteases convert proteins into?
Amino acids
What are the products when lipases break down lipids?
What are the products when lipases break down lipids?
Fatty acids and glycerol
What colour does Benedict's test turn when sugars are present?
What colour does Benedict's test turn when sugars are present?
Brick red
What colour does iodine test turn when starch is present?
What colour does iodine test turn when starch is present?
Blue-black
What is the process where bile breaks down large fat droplets into smaller ones called?
What is the process where bile breaks down large fat droplets into smaller ones called?
Emulsification