Gce Model Questions Vol1 2023 Biology Question 30

Practice objective / multiple choice question 30 from the 2023 Gce Model Questions Vol1 Biology examination.

Gce Model Questions Vol1 2023 Biology Objective / Multiple Choice Medium Difficulty
Question 30 GCE_MODEL_QUESTIONS_VOL1 • 2023 • BIOLOGY • objective

In a metabolic study, insulin secretion rates and glucose‑uptake efficiencies were measured under two conditions. *Scenario 1*: Basal insulin secretion = \(0.5\ \mu\text{U\,min}^{-1}\); glucose uptake efficiency = \(8\ \text{mg\,dL}^{-1}\,\mu\text{U}^{-1}\,\text{min}^{-1}\). *Scenario 2*: Post‑prandial insulin secretion = \(2.0\ \mu\text{U\,min}^{-1}\); glucose uptake efficiency = \(5\ \text{mg\,dL}^{-1}\,\mu\text{U}^{-1}\,\text{min}^{-1}\) (reflecting insulin resistance). Assuming an initial blood glucose concentration of \(100\ \text{mg\,dL}^{-1}\) and that insulin‑mediated glucose uptake is the only process affecting glucose level, calculate the net change in blood glucose concentration after \(30\) minutes for each scenario. Indicate which scenario is more likely to produce hypoglycaemia.

Answer Options

Correct Answer A. Scenario 1: net change = ‑120 mg dL⁻¹ (blood glucose would drop to zero). Scenario 2: net change = ‑300 mg dL⁻¹ (even larger drop). Scenario 2 is more likely to cause hypoglycaemia.
B. Scenario 1: net change = ‑120 mg dL⁻¹ (blood glucose would drop to zero). Scenario 2: net change = ‑200 mg dL⁻¹ (blood glucose would drop to zero). Scenario 1 is more likely to cause hypoglycaemia.
C. Scenario 1: net change = ‑60 mg dL⁻¹ (blood glucose would drop to 40 mg dL⁻¹). Scenario 2: net change = ‑150 mg dL⁻¹ (blood glucose would drop to zero). Scenario 1 is more likely to cause hypoglycaemia.
D. Scenario 1: net change = ‑90 mg dL⁻¹ (blood glucose would drop to 10 mg dL⁻¹). Scenario 2: net change = ‑300 mg dL⁻¹ (blood glucose would drop to zero). Scenario 1 is more likely to cause hypoglycaemia.
Correct Answer
A
Correct Option:
Scenario 1: net change = ‑120 mg dL⁻¹ (blood glucose would drop to zero). Scenario 2: net change = ‑300 mg dL⁻¹ (even larger drop). Scenario 2 is more likely to cause hypoglycaemia.

About This Question

This is Gce Model Questions Vol1 2023 Biology Question 30. It is one of the objective questions from the 2023 Gce 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