O-LevelBiologyCoordination & Response5090/11 · Oct/Nov 2021 · Q251 Mark
An investigation into reaction times involved three similar large groups of adults. Each adult had to press a button as soon as they saw a light flash. The time between the light coming on and the button being pressed was measured. Group 1 did the task 30 minutes after smoking a cigarette. Group 2 did the task 30 minutes after drinking 2 units of alcohol. Group 3 was the control group. The control group did not smoke or drink alcohol. The graph shows the results of this investigation. [Figure 25] What is the best conclusion from the data?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
ANicotine is a depressant and alcohol is a stimulant.
BNicotine reduces reaction times and alcohol increases reaction times.
CNicotine makes reactions slower and alcohol makes reactions faster.
DNicotine and alcohol are both addictive.
✓ Correct answer
B: Nicotine reduces reaction times and alcohol increases reaction times.
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