Neco 2023 Biology Question 31

Practice objective / multiple choice question 31 from the 2023 Neco Biology examination.

Neco 2023 Biology Objective / Multiple Choice Medium Difficulty
Question 31 NECO • 2023 • BIOLOGY • objective
Neco 2023 Biology Question 31 diagram

The diagram of a nephron is labelled with the following parts: Glomerulus, Bowman's capsule, Proximal convoluted tubule, Loop of Henle, Distal convoluted tubule and Collecting duct. If the glomerular filtration rate is \\(180\\,\\text{mL}\\,\\text{min}^{-1}\\) and the following percentages of the filtrate are reabsorbed sequentially: 65\% in the proximal tubule, 25\% of the remaining filtrate in the loop of Henle, and 15\% of the remaining filtrate in the distal tubule, calculate the volume of urine formed per minute and state which nephron segment reabsorbs the greatest absolute volume of water.

Answer Options

Correct Answer A. Urine volume ≈ 40.2 mL min⁻¹; the proximal convoluted tubule reabsorbs the greatest absolute volume (≈117 mL min⁻¹).
B. Urine volume ≈ 45.0 mL min⁻¹; the loop of Henle reabsorbs the greatest absolute volume (≈115 mL min⁻¹).
C. Urine volume ≈ 38.5 mL min⁻¹; the distal convoluted tubule reabsorbs the greatest absolute volume (≈110 mL min⁻¹).
D. Urine volume ≈ 42.0 mL min⁻¹; the collecting duct reabsorbs the greatest absolute volume (≈120 mL min⁻¹).
Correct Answer
A
Correct Option:
Urine volume ≈ 40.2 mL min⁻¹; the proximal convoluted tubule reabsorbs the greatest absolute volume (≈117 mL min⁻¹).

About This Question

This is Neco 2023 Biology Question 31. It is one of the objective questions from the 2023 Neco Biology examination.

Difficulty level: Medium .

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