A population of Saccharomyces cerevisiae yeast is placed into an open container of 5 percent glucose solution. After three days, the container is covered with an air-tight seal. Predict how this population will respond.

The population will use alcoholic fermentation to produce free energy.

The population will use aerobic respiration until it runs out of oxygen, at which point it will die.

The population will become obligate anaerobes that will only survive if the container remains sealed.

The population will use oxidative phosphorylation to produce free energy.

The correct answer is:

The population will use alcoholic fermentation to produce free energy.