A fox consumes a meal containing 5000 J of energy, and loses 1800 J in feces. If the fox has a production efficiency rate of 2%, how much energy does it use in cellular respiration and maintenance?

A. 1104 J
B. 2200 J
C. 44 J
D. 2156 J
E. 394 J


D. 2156 J

5000 J (eaten) -1800 J (feces) = 2200 J (assimilated). Production efficiency = is 2 %
2200J (assimilated) * 0.02 (production efficiency) = 44 J (growth)
2200 J (assimilated) - 44 J (growth) = 2156 J (cellular respiration and maintenance) Clarify Question

Biology & Microbiology

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