You will complete eight required practical activities if you are studying GCSE Biology and eighteen if you are studying GCSE Combined Science. You could be asked questions about the methods, safety precautions you might take, results and conclusions of these experiments.
In this Cells and Control section there are three suggested practicals:
These questions have been written by Bitesize consultants as suggestions to the types of questions that may appear in an exam paper.
Describe the method used to investigate the speed of reaction times. [4 marks]
Any four from:
Describe how you could adjust this method to show the effect of stimulants in reaction times. [2 marks]
Answer (two from):
Identify the anomalous result in the table below and explain what the students should now do. [3 marks]
|Attempt||Distance on ruler (cm)||Distance on ruler (cm)|
|number||Without caffeine||With caffeine|
One mark for the value and two for how to proceed:
This table shows how catch distances (centimetres) on the ruler drop test and reaction times (milliseconds) are related.
|Catch distance (cm)||Reaction time (ms)|
Draw a graph of catch distance against reaction time. [5 marks]