Waec Model Questions Vol1 2021 Biology Question 19

Practice objective / multiple choice question 19 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 19 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

The normal plasma osmolarity of a healthy adult is about 300 mOsm/L. A patient receives an intravenous infusion of 250 mL of 5 % dextrose (D5W), which contains no solutes and therefore acts as free water. If the patient's plasma volume before the infusion is 3 L and no solutes are lost or added during the infusion, what will be the new plasma osmolarity after the infusion? Express your answer to the nearest whole mOsm/L.

Answer Options

A. 285 mOsm/L
B. 250 mOsm/L
Correct Answer C. 277 mOsm/L
D. 300 mOsm/L
Correct Answer
C
Correct Option:
277 mOsm/L

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 19. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

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