AQA 8461's Exemplary Exploration of GCSE Biology Required Practicals
Question 1
Q1. Knowledge Recall (1 mark)
Define aseptic technique.
Question 2
Q2. Application (2 marks)
Explain why it is important to use a control group in an experiment investigating the effect of light intensity on plant growth.
Question 3
Q3. Extended Response (3 marks)
Describe the steps involved in using a light microscope to observe plant cells. Include any precautions that should be taken.
Question 4
Q4. Knowledge Recall (1 mark)
Name the reagent used to test for starch.
Question 5
Q5. Application (2 marks)
Explain how to use Benedict's reagent to test for the presence of reducing sugars.
Question 6
Q6. Extended Response (3 marks)
Describe how to prepare an onion root tip for observation under a microscope.
Question 7
Q7. Knowledge Recall (1 mark)
Define independent variable.
Question 8
Q8. Application (2 marks)
Explain how to control variables in an experiment investigating the effect of pH on the activity of an enzyme.
Question 9
Q9. Extended Response (4 marks)
Describe how to determine the reliability and accuracy of an experiment.
Question 10
Q10. Knowledge Recall (2 marks)
Define the term precision.