In the Classroom: Students Conduct Lab On Cellular Respiration

February 14, 2022

The purpose of this Grade 9 Biology lab was to analyze the effect of exercise on cellular respiration. Students were to identify the role of carbon dioxide production, breathing rate, and heart rate in determining the rate of cellular respiration. Carbon dioxide production can be measured by breathing through a straw into a solution of bromothymol blue (BTB), an acid indicator, and observing the color change.