The student investigated the sensitivity of different parts of the body - Edexcel - GCSE Biology - Question 3 - 2017 - Paper 1
Question 3
The student investigated the sensitivity of different parts of the body.
The diagram shows a piece of wire with the ends at a set distance apart. Different parts of... show full transcript
Worked Solution & Example Answer:The student investigated the sensitivity of different parts of the body - Edexcel - GCSE Biology - Question 3 - 2017 - Paper 1
Step 1
Suggest one safety precaution that should be considered when doing this investigation.
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Answer
One important safety precaution is to ensure that the wire used in the experiment is not too sharp or pointed, in order to avoid injury to the skin. Additionally, it is crucial to check that the wire is clean and disinfected to prevent any allergic reactions or infections.
Step 2
List the sensitive areas in order from least to most sensitive.
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Answer
shoulder
arm
back of hand
palm of hand
fingertip
Step 3
Explain why the palm of the hand is most sensitive.
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Answer
The palm of the hand is most sensitive because it is often in contact with various objects and environments, which requires a faster reaction to prevent damage. This heightened sensitivity allows for quicker responses to potential dangers.
Step 4
Explain the importance of a rapid response.
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A rapid response is crucial for immediate action to protect oneself from harm. It enables a person to react without thinking, allowing them to limit damage and get away from potential dangers quickly.
