Neco Model Questions Vol1 2025 Biology Question 7

Practice essay / theory question 7 from the 2025 Neco Model Questions Vol1 Biology examination. This question covers Homeostasis, Thermoregulation, Negative feedback, Blood glucose regulation, Water balance .

Neco Model Questions Vol1 2025 Biology Essay / Theory
Topics: Homeostasis Thermoregulation Negative feedback Blood glucose regulation Water balance
Question 7 NECO_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • essay

During a 30‑minute moderate‑intensity run in a hot and humid environment (35 °C, 80 % humidity), a 25‑year‑old male experiences a rise in core body temperature. The body activates several physiological responses to restore thermal balance.

Question Parts

( a )
Explain, with a clear sequence of events, how negative feedback regulates body temperature in the situation described.
( b )
Describe two other homeostatic mechanisms that operate in the human body, stating the variable controlled, the primary sensor, the effector organ and whether the feedback is negative or positive. Compare the feedback type of each with that described in part (a).
( c )
Predict the physiological consequences if the hypothalamic temperature centre were damaged and could not receive or send signals. Discuss how this impairment would affect the mechanisms mentioned in parts (a) and (b).
( ) Immediate effects on core temperature regulation during exercise.
( ) Long‑term implications for other homeostatic systems (e.g., glucose and water balance).

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About This Question

This is Neco Model Questions Vol1 2025 Biology Question 7. It is one of the essay questions from the 2025 Neco Model Questions Vol1 Biology examination.

The question covers Homeostasis, Thermoregulation, Negative feedback, Blood glucose regulation, Water balance .

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