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 can't grow anaerobically.
B) These bacteria get more energy anaerobically.
C) Aerobic metabolism is more efficient than fermentation.
D) These bacteria don't use O₂.