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A student wanted to make a jacket to wear in cold weather - Edexcel - GCSE Biology - Question 4 - 2023 - Paper 2
Question 4
A student wanted to make a jacket to wear in cold weather. The student compared the insulation properties of wool as a natural material with polyester as a syntheti... show full transcript
Worked Solution & Example Answer:A student wanted to make a jacket to wear in cold weather - Edexcel - GCSE Biology - Question 4 - 2023 - Paper 2
Step 1
Which part of the body controls the regulation of body temperature?
Answer
The part of the body that controls the regulation of body temperature is the hypothalamus. This structure plays a crucial role in maintaining homeostasis by regulating various bodily functions, including temperature.
Step 2
State one variable that should be controlled in this investigation.
Answer
One variable that should be controlled in this investigation is the volume of water in each beaker. This ensures that any changes in temperature are due to the insulating properties of the materials tested, not differences in water amount.
Step 3
Describe a control that could be used for this investigation.
Answer
A control for this investigation would involve repeating the experiment/set up the apparatus as shown in Figure 8 without including the insulating materials. This allows for comparison of temperature changes in the beakers without the influence of wool or polyester, providing a baseline measurement.