You discover a new organism while on vacation in Yellowstone Park. You use a series of experiments to establish that it carries out aerobic respiration, but find that it has a unique ATP synthase that requires 16 protons per rotation. What does this tell you about the P/O ratio in this organism?
A. The new organism only makes ATP by substrate-level phosphorylation.
B. The P/O ratio in the new organism is higher than your P/O ratio.
C. The P/O ratio in the new organism is lower than your P/O ratio.
D. The P/O ratio in the new organism is the same as your P/O ratio.
Answer: C
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