You are growing Bacillus subtilis in a bioreactor and notice that the growth rate has slowed and the pH has decreased. You suspect the bacteria are

Question

Quizplus · Accepted Answer

When the growth rate of Bacillus subtilis slows and the pH decreases, it suggests that the bacteria are fermenting. Fermentation can lead to the production of acidic byproducts, which would cause the pH to decrease. This is a common response when oxygen is limited or when the bacteria have consumed readily available sugars and are metabolizing other substrates less efficiently.

You Are Growing Bacillus Subtilis in a Bioreactor and Notice