Final answer:
Red blood cells placed in a beaker with higher salt concentration will lose water and shrink in size.
Step-by-step explanation:
When red blood cells are placed in a beaker with a higher salt concentration than the salt concentration inside the red blood cells, they will lose water and shrink. This is because the higher salt concentration outside the cells creates a hypertonic solution, meaning the water inside the cells will move out to balance the concentration. As a result, the red blood cells will shrink in size.
Learn more about Effects of high salt concentration on red blood cells