Gce Model Questions Vol1 2019 Biology Question 16

Practice objective / multiple choice question 16 from the 2019 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2019 Biology Objective / Multiple Choice Hard Difficulty
Question 16 GCE_MODEL_QUESTIONS_VOL1 • 2019 • BIOLOGY • objective

Desert mammals and reptiles show a relationship between body mass (M, in kg) and basal metabolic rate (BMR, in watts) that can be expressed as \( \text{BMR}=aM^{b} \). For a desert rodent (Species A) with \(M=0.05\) kg the measured BMR is 0.9 W, and for a desert lizard (Species B) with \(M=0.20\) kg the measured BMR is 2.5 W.\n\n(a) Determine the constants \(a\) and \(b\) that satisfy the data.\n(b) Using these constants, predict the BMR of a desert fox (Species C) that weighs 5 kg.\n(c) The fox's actual measured BMR is 30 W. Comment on whether this indicates an additional physiological adaptation.

Answer Options

A. Predicted BMR ≈ 27 W; the observed 30 W is lower, suggesting a reduced metabolic rate.
Correct Answer B. Predicted BMR ≈ 27 W; the observed 30 W is higher, suggesting an extra physiological adaptation.
C. Predicted BMR ≈ 35 W; the observed 30 W is lower, indicating a possible metabolic efficiency.
D. Predicted BMR ≈ 22 W; the observed 30 W is higher, suggesting an extra physiological adaptation.
Correct Answer
B
Correct Option:
Predicted BMR ≈ 27 W; the observed 30 W is higher, suggesting an extra physiological adaptation.

About This Question

This is Gce Model Questions Vol1 2019 Biology Question 16. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Biology examination.

Difficulty level: Hard .

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