Figure 5.6 -The Rates of O₂ and Glucose Consumption by a Bacterial

Multiple Choice

Figure 5.6
-The rates of O₂ and glucose consumption by a bacterial culture are shown in Figure 5.6.Assume a bacterial culture was grown in a glucose medium without O₂.Then O₂ was added at the time marked X.The data indicate that

A) these bacteria don't use O₂.
B) these bacteria get more energy anaerobically.
C) aerobic metabolism is more efficient than fermentation.
D) these bacteria cannot grow anaerobically.