An appropriate range of temperatures for an experiment on how temperature affects membrane permeability in beetroot cubes would typically include temperatures within the following range:
- 0°C (to establish a baseline)
- Room temperature (around 20-25°C)
- Elevated temperatures, such as 40°C, 60°C, and 80°C
This range covers a spectrum from low to high temperatures, allowing you to observe the effect of temperature variations on membrane permeability.