Igcse Model Questions Vol1 2022 Biology Question 18
Practice objective / multiple choice question 18 from the 2022 Igcse Model Questions Vol1 Biology examination.
Blood glucose concentration \(G\) (mg dL⁻¹) in a simplified model changes as \(\frac{dG}{dt}=R_{in}-R_{out}\), where \(R_{in}=0.5+0.02\,(200-G)\) mg dL⁻¹ min⁻¹ (liver input plus intestinal absorption) and \(R_{out}=0.03\,G\) mg dL⁻¹ min⁻¹ (insulin‑mediated uptake).\n\n(a) Determine the fasting equilibrium glucose concentration (where \(dG/dt=0\)).\n(b) Immediately after a meal, the intestinal absorption term changes to \(0.04\,(250-G)\) for the next 30 minutes, while the other terms remain unchanged. Assuming the glucose concentration does not change appreciably during this short interval, calculate the glucose concentration at the end of the 30‑minute period.
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This is Igcse Model Questions Vol1 2022 Biology Question 18. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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