Waec Model Questions Vol1 2021 Biology Question 43

Practice objective / multiple choice question 43 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 43 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

The glomerular filtration rate (GFR) of a kidney is 125 mL min⁻¹. Plasma urea concentration is 5 mmol L⁻¹ and 95 % of the filtered urea is re‑absorbed. How many millimoles of urea are excreted per minute?

Answer Options

A. 0.125 mmol min⁻¹
Correct Answer B. 0.031 mmol min⁻¹
C. 0.025 mmol min⁻¹
D. 0.062 mmol min⁻¹
Correct Answer
B
Correct Option:
0.031 mmol min⁻¹

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 43. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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