Multiple Choice
Because hardly any oxygen (O2) was in the early Earth's atmosphere, the single-celled microorganisms probably used which of the following to produce energy to drive metabolic processes?
A) Aerobic cellular respiration.
B) Anaerobic cellular respiration.
C) Sulfuric acid respiration.
D) Both aerobic and anaerobic cellular respiration.
E) Sulfuric acid, aerobic and anaerobic respiration.
Correct Answer:
Verified
Correct Answer:
Verified
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