A pathway that generates ATP by substrate-level phosphorylation that does not require oxygen and produces various end products, including alcohols, acids, carbon dioxide, and hydrogen, is:
a. substrate-level phosphorylation.
b. fermentative metabolism.
c. oxidative phosphorylation.
d. aerobic respiration.
B
Fermentative metabolism is one form of substrate-level phosphorylation that does not require oxygen. Oxidative phosphorylation, including both aerobic and anaerobic respiration, is an elec-tron transport system.
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