O-LevelBiologyCell Biology5090/12 · May/June 2018 · Q261 Mark
Antibiotics, such as penicillin, are produced in fermenters on a large scale. Which substance is not needed for production of penicillin in this way?
Acarbon dioxide
Bmineral ions
Coxygen
Dsugar
✓ Correct answer
A: carbon dioxide
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