Neco 2019 Biology Question 1

Practice objective / multiple choice question 1 from the 2019 Neco Biology examination.

Neco 2019 Biology Objective / Multiple Choice Medium Difficulty

Question 1 NECO • 2019 • BIOLOGY • objective

A person drinks 500\,mL of a solution containing 2\% (w/v) NaCl. Their plasma volume is 3\,L and the initial plasma Na\(^+\) concentration is 140\,mmol/L. The kidneys excrete Na\(^+\) at a constant rate of 150\,mmol per hour. After 2\,hours, what is the plasma Na\(^+\) concentration (in mmol/L)?

A. 102 mmol/L

B. 85 mmol/L

C. 110 mmol/L

Correct Answer D. 97 mmol/L

Correct Answer

Correct Option:

97 mmol/L

This is Neco 2019 Biology Question 1. It is one of the objective questions from the 2019 Neco Biology examination.

Difficulty level: Medium .

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