You Are Growing Bacillus Subtilis, an Aerobic Bacterium That Can

Multiple Choice

You are growing Bacillus subtilis, an aerobic bacterium that can also carry out fermentation when required, in a bioreactor and notice that the growth rate has slowed and the pH has decreased. You suspect the bacteria are

A) fermenting.
B) using proteins.
C) photosynthesizing.
D) using the Krebs cycle.
E) dead.