20/05/2026
Grade 11 Life Science Term 2 Experiment
We conducted an experiment as part of our section on Respiration & Photosynthesis.
The aim of the investigation is determine whether gas is produced when yeast undergoes anaerobic respiration.
Each bottle contained yeast & warm water, however, only 3 bottles contained sugar in varying amounts. Bottle 4’s balloon, which contained 3 teaspoons of sugar, expanded the most, proving that gas is released during anaerobic respiration.