Core Practical: Investigating rate of enzymes (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What does amylase break down in this investigation?
What does amylase break down in this investigation?
Starch
What is the product when amylase breaks down starch?
What is the product when amylase breaks down starch?
Maltose
Which indicator is used to detect the presence of starch?
Which indicator is used to detect the presence of starch?
Iodine solution
What colour does iodine turn in the presence of starch?
What colour does iodine turn in the presence of starch?
Blue-black
What temperature should the water bath be heated to?
What temperature should the water bath be heated to?
35°C
What volume of amylase solution is added to the boiling tube?
What volume of amylase solution is added to the boiling tube?
3cm³
How often should samples be taken during the experiment?
How often should samples be taken during the experiment?
Every 10 seconds
What formula is used to calculate the rate of reaction?
What formula is used to calculate the rate of reaction?
What is the optimum pH for amylase activity?
What is the optimum pH for amylase activity?
pH 7
What colour is iodine when starch is no longer present?
What colour is iodine when starch is no longer present?
Browny-orange
Which is a control variable in this experiment?
Which is a control variable in this experiment?
Concentration of amylase solution