The enzyme formate dehydrogenase (FDH) splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell, the internal pH would become far too ________ to support viability.
A. alkaline
B. acidic
C. hypertonic
D. hypotonic
Answer: B
Biology & Microbiology
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