Breathing Cells - Cellular Respiration
This online resource shows how pH levels can be used to measure the respiration of cells.
In this activity, students use a simple pH indicator to measure how much CO2 is produced during respiration, at rest and after exercising. They begin by comparing some common household solutions in order to determine the colour change of the indicator. They then review the concepts of pH and respiration and extend their knowledge to measuring the effectiveness of bioremediation in the environment.
Engineering Connection
