Two students set up the following apparatus in a lab: a pipette was filled with a mixture of yeast and apple juice and inverted in a test tube filled with warm water. The students observed bubbles being released from the end of the pipette.
Which MOST LIKELY represents the gas being released and the process used to make it?
1 answer
The most likely gas being released in this scenario is carbon dioxide (CO2). The process used to make it is likely fermentation. Fermentation is a metabolic process carried out by yeast, where sugars in the apple juice are broken down to produce carbon dioxide and alcohol. The bubbles observed being released from the pipette are the result of the generated carbon dioxide escaping from the mixture.