Pseudomonas denitrificans, Bacillus megaterium, and Propionibacterium freudenreichii
Explanation:
Humans cannot synthesize vitamin B12, and, thus must obtain it from organisms that can. Only a limited number of bacteria are known to produce vitamin B12, three of which—Pseudomonas denitrificans, Bacillus megaterium, and Propionibacterium freudenreichii—are used for commercial production
Answers & Comments
Answer:
Pseudomonas denitrificans, Bacillus megaterium, and Propionibacterium freudenreichii
Explanation:
Humans cannot synthesize vitamin B12, and, thus must obtain it from organisms that can. Only a limited number of bacteria are known to produce vitamin B12, three of which—Pseudomonas denitrificans, Bacillus megaterium, and Propionibacterium freudenreichii—are used for commercial production