Igcse Model Questions Vol1 2025 Biology Question 8

Practice objective / multiple choice question 8 from the 2025 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2025 Biology Objective / Multiple Choice Medium Difficulty
Question 8 IGCSE_MODEL_QUESTIONS_VOL1 • 2025 • BIOLOGY • objective

A resting adult produces metabolic heat at a rate of \(100\ \text{W}\). In a cold environment the heat loss by convection from the skin can be approximated by \(Q = hA\,(T_{\text{body}}-T_{\text{env}})\) where \(hA = 5\ \text{W/°C}\). The body temperature is \(37\ \text{°C}\) and the ambient temperature is \(-5\ \text{°C}\). How many watts of additional heat must be generated by shivering to keep the body temperature constant?

Answer Options

Correct Answer A. 110 W
B. 100 W
C. 150 W
D. 210 W
Correct Answer
A
Correct Option:
110 W

About This Question

This is Igcse Model Questions Vol1 2025 Biology Question 8. It is one of the objective questions from the 2025 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support