In an experiment, red blood cells are dropped into a beaker of fluid. Within a few seconds, the cells begin to shrink. Which of the following is true?

A. Water is travelling out of the cells by diffusion

B. The fluid in the beaker is hypertonic

C. Water is travelling out of the cells up a concentration gradient

D. The osmotic pressure of the fluid inside the red blood cell is higher than the fluid in the beaker

Reveal the answer

B. The fluid in the beaker is hypertonic

Content adapted from ClinicalKey Student question bank

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