Igcse Model Questions Vol1 2022 Biology Question 2

Practice objective / multiple choice question 2 from the 2022 Igcse Model Questions Vol1 Biology examination.

Igcse Model Questions Vol1 2022 Biology Objective / Multiple Choice Medium Difficulty
Question 2 IGCSE_MODEL_QUESTIONS_VOL1 • 2022 • BIOLOGY • objective

A kidney filters blood at a glomerular filtration rate of 120 mL min⁻¹. The filtrate initially contains 0.9 g L⁻¹ of glucose and 140 mmol L⁻¹ of Na⁺. During tubular processing, 99 % of the glucose, 85 % of the Na⁺ and 70 % of the water are re‑absorbed. Calculate (a) the volume of urine produced each minute, (b) the concentration of glucose (g L⁻¹) in the urine, and (c) the concentration of Na⁺ (mmol L⁻¹) in the urine.

Answer Options

Correct Answer A. Urine volume 0.036 L min⁻¹; glucose 0.03 g L⁻¹; Na⁺ 70 mmol L⁻¹
B. Urine volume 0.030 L min⁻¹; glucose 0.01 g L⁻¹; Na⁺ 70 mmol L⁻¹
C. Urine volume 0.042 L min⁻¹; glucose 0.09 g L⁻¹; Na⁺ 85 mmol L⁻¹
D. Urine volume 0.036 L min⁻¹; glucose 0.03 g L⁻¹; Na⁺ 60 mmol L⁻¹
Correct Answer
A
Correct Option:
Urine volume 0.036 L min⁻¹; glucose 0.03 g L⁻¹; Na⁺ 70 mmol L⁻¹

About This Question

This is Igcse Model Questions Vol1 2022 Biology Question 2. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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