Neco 2024 Biology Question 48

Practice objective / multiple choice question 48 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Medium Difficulty
Question 48 NECO • 2024 • BIOLOGY • objective

In a renal clearance study, a substance X is filtered freely and neither reabsorbed nor secreted. Plasma concentration of X is 0.8 mg·mL^{-1}, urine flow rate is 1.2 mL·min^{-1}, and urine concentration of X is 2.4 mg·mL^{-1}. (a) Determine the glomerular filtration rate (GFR) in mL·min^{-1}. (b) Another substance Y is filtered and also secreted at a rate of 0.5 mg·min^{-1}. Its plasma concentration is 0.2 mg·mL^{-1}. Calculate the renal clearance of Y in mL·min^{-1}.

Answer Options

Correct Answer A. GFR = 3.6 mL·min^{-1}; clearance of Y = 6.1 mL·min^{-1}
B. GFR = 4.8 mL·min^{-1}; clearance of Y = 5.0 mL·min^{-1}
C. GFR = 3.0 mL·min^{-1}; clearance of Y = 7.2 mL·min^{-1}
D. GFR = 2.4 mL·min^{-1}; clearance of Y = 4.5 mL·min^{-1}
Correct Answer
A
Correct Option:
GFR = 3.6 mL·min^{-1}; clearance of Y = 6.1 mL·min^{-1}

About This Question

This is Neco 2024 Biology Question 48. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Medium .

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