A gecko consumes $10.0 \mathrm{~g} /$ day of worms containing $50 \%$ water and an energy content of $50 \mathrm{kcal} \mathrm{per} \mathrm{g}$ of oven - dried worms. If $25 \%$ of the energy is found in feces and $25 \%$ is found in urine and assuming that there are no other energy sources or losses, calculate the energy amount used in metabolism.

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∻Answer∻ ⚹ The gecko uses 250 kcal per day for metabolism. ⚹ ∻Solution∻ ‖ a ⋮ Calculate the dry weight of the worms consumed: Since the worms contain 50% water, the dry weight is 50% of the total weight. ‖ ‖ b ⋮ Calculate the total energy content of the dry worms: Multiply the dry weight by the energy content per gram of oven-dried worm. ‖ ‖ c ⋮ Calculate the energy lost in feces and urine: Since 25% is lost in feces and another 25% in urine, a total of 50% of the energy content is not used for metabolism. ‖ ‖ d ⋮ Calculate the energy used for metabolism: Subtract the energy lost in feces and urine from the total energy content of the dry worms. ‖ ∻Key Concept∻ ⚹ Energy balance in organisms ⚹ ∻Explanation∻ ⚹ The energy used for metabolism is the energy intake minus the energy lost in excretions. ⚹◊What is the formula to calculate the energy amount used in metabolism in this scenario?⍭ Generate me a similar question◊

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