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5.2 The human nervous system

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Question 5
H57%

Students investigated the effect of caffeine on reaction time using the ruler drop test. Which of these is a control variable in this investigation?

[1]
A

The hand each student uses to catch the falling ruler

B

The reaction time of each student after the caffeine drink

C

The mass of caffeine in the drink given to each student

D

The number of students who take part in the investigation

Markscheme

5.2 The human nervous system Questions

  1. GCSE
  2. /Biology
  3. /5.2 The human nervous system

40 exam-style questions on AQA GCSE Biology 5.2 The human nervous system, covering 5.2.1 Structure and function, 5.2.2 The brain, 5.2.3 The eye, and 5.2.4 Control of body temperature. Each one has a worked solution and a mark scheme showing where the marks go.

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