Neco 2022 Biology Question 7

Practice essay / theory question 7 from the 2022 Neco Biology examination. This question covers Homeostasis .

Neco 2022 Biology Essay / Theory

Topic: Homeostasis

Question 7 NECO • 2022 • BIOLOGY • essay

A mountaineer ascends to an altitude of 4,500 metres where the ambient temperature is consistently below 5 °C. Despite the cold environment, his core body temperature remains near normal. Discuss the homeostatic mechanisms that enable the maintenance of core temperature in this situation.

Question Parts

( a )

Explain how negative feedback operates in the regulation of body temperature, identifying the key components of the control system.

( b )

Describe two physiological responses that the mountaineer’s body employs to conserve heat and generate additional heat.

( c )

Predict the changes that would occur in the mountaineer’s body if the hypothalamic set‑point were raised by 1 °C (as in a fever).

( d )

Propose a practical experiment to test whether prolonged exposure to cold (acclimatization) improves the mountaineer’s cold‑tolerance. Include the hypothesis, variables, method and the type of data to be recorded.

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About This Question

This is Neco 2022 Biology Question 7. It is one of the essay questions from the 2022 Neco Biology examination.

The question covers Homeostasis .

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