Final answer:
A 5.0% glucose solution is considered isotonic, which means it has the same osmolarity as another solution and would not cause red blood cells to change in volume or shape.
Step-by-step explanation:
A solution with 5.0% glucose is considered isotonic. An isotonic solution has the same solute concentration, or osmolarity, as another solution. In the context of human biology, an isotonic glucose solution refers to one that would not result in any net movement of water into or out of body cells, maintaining equilibrium. This is because typical isotonic solutions for medical use include 0.9% m/v NaCl or 5% m/v glucose in water. When discussing intravenous solutions for rehydration or medical treatment, such an isotonic glucose solution would ensure that red blood cells maintain their normal volume and shape, preventing any harmful effects from osmotic imbalance.