Question

when testing tonicity of red blood cells, if the solution became transparent after adding blood cells, you could assume
multiple choice
the solution was hypertonic and the cells had shrunk.
the solution was hypotonic and the cells had burst.
the solution was isotonic and the cells had burst.
the solution was hypotonic and the cells had remained intact.
the solution was hypertonic and the cells remained intact.

Explanation:

When a solution is hypotonic compared to red - blood cells, water moves into the cells by osmosis. If enough water enters, the cells burst (hemolysis). When cells burst, the solution becomes transparent as there are no intact cells to scatter light. In a hypertonic solution, cells shrink and in an isotonic solution, cells remain intact.

Answer:

the solution was hypotonic and the cells had burst.