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A person’s eyes can focus on objects at different distances - AQA - GCSE Biology - Question 2 - 2023 - Paper 2
Question 2
A person’s eyes can focus on objects at different distances. A person looks at a distant object. The person then looks at a near object. The person’s eyes make adjus... show full transcript
Worked Solution & Example Answer:A person’s eyes can focus on objects at different distances - AQA - GCSE Biology - Question 2 - 2023 - Paper 2
Step 1
Which term describes the adjustment of focus from the distant object to the near object?
Answer
The term that describes the adjustment of focus from a distant object to a near object is Accommodation. This is the process by which the eye changes its focus from distant to near objects by altering the shape of the lens.
Step 2
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Step 4
Plan an investigation to test the effect of drinking coffee on reaction time.
Answer
To investigate the effect of drinking coffee on reaction time, you should use the following steps:
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Test for Reaction Time: Use a ruler drop test or a reaction time app to measure how quickly subjects respond to a stimulus.
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Choose Control and Experimental Groups: Have one group drink coffee before the test and another group that does not drink any coffee (control).
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Standardize Variables: Ensure that all participants are tested at the same time of day to minimize the effect of fatigue.
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Repeat the Test: Have subjects perform the test multiple times after consuming coffee and compare the results with the control group. This helps ensure that results are valid and reliable.