Neco 2024 Biology Question 23

Practice objective / multiple choice question 23 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Medium Difficulty

Question 23 NECO • 2024 • BIOLOGY • objective

Renal plasma flow is \(600\ \text{mL min}^{-1}\) and the filtration fraction is \(20\%\). The plasma sodium concentration is \(145\ \text{mmol L}^{-1}\). Of the filtered sodium, \(65\%\) is reabsorbed in the proximal tubule, \(25\%\) in the loop of Henle and \(5\%\) in the distal tubule. Calculate the amount of sodium excreted in the urine per minute (in \(\text{mmol min}^{-1}\)).

Correct Answer A. 0.87 mmol min⁻¹

B. 0.97 mmol min⁻¹

C. 1.74 mmol min⁻¹

D. 0.44 mmol min⁻¹

Correct Answer

Correct Option:

0.87 mmol min⁻¹

This is Neco 2024 Biology Question 23. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Medium .

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