Many industrial biotechnology processes rely on the specific metabolic pathways of either eukaryotic or prokaryotic microorganisms.
In which of the following commercial processes is a prokaryote (bacterium) utilized as the primary biological agent?
The industrial synthesis of citric acid
The commercial manufacture of mycoprotein
The production of biodegradable polyhydroxyalkanoate (PHA) polymers
The large-scale production of the antibiotic penicillin
