Conditions in the human body must be regulated to maintain a stable internal environment - Edexcel - GCSE Biology - Question 5 - 2012 - Paper 1
Question 5
Conditions in the human body must be regulated to maintain a stable internal environment.
Name the process that maintains a stable internal environment.
(1)
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Worked Solution & Example Answer:Conditions in the human body must be regulated to maintain a stable internal environment - Edexcel - GCSE Biology - Question 5 - 2012 - Paper 1
Step 1
Name the process that maintains a stable internal environment.
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Answer
The process that maintains a stable internal environment is called homeostasis.
Step 2
The temperature that enzymes work most effectively in the human body is
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Answer
The temperature at which enzymes work most effectively in the human body is D 37°C.
Step 3
Explain how this information is transmitted to the brain.
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Answer
Receptor cells located in the skin detect changes in external temperature. When the temperature changes, these receptors send signals via sensory neurons to the spinal cord. From the spinal cord, the information is relayed to the brain, specifically the hypothalamus, which processes the temperature information and coordinates an appropriate response to regulate body temperature.
