BTB Cellular Respiration Lab

Nicole·

Biology

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At a Glance

SubjectBiology

Original Prompt

I want a lab with this information: This activity uses Bromothymol Blue (BTB), a pH indicator, to detect carbon dioxide ( ) produced during cellular respiration, changing from blue to yellow as the solution becomes acidic. Students or organisms (like germinating seeds) breathe out into the BTB solution, causing a faster color change after exercise. YouTube YouTube +4 Materials Needed: Bromothymol Blue (BTB) solution Straws and beaker/test tubes Safety glasses Stopwatch Optional: Water plant...

This lab exercise focuses on the relationship between exercise and cellular respiration, specifically examining how increased physical activity affects the rate of CO2 production as detected by Bromothymol Blue (BTB) indicator. Students will conduct experiments to measure the time it takes for BTB to change color when CO2 is introduced through exhalation, both at rest and post-exercise. The lab encourages critical thinking through hypotheses, data analysis, and conclusions to understand the metabolic activity associated with exercise. Safety guidelines are emphasized throughout the procedure, and data collection is structured to allow for a thorough analysis of the results and their implications in cellular respiration.