Many bacteria in our digestive system synthesize vitamins for example vitamin_________?
Correct answer: C. B12
- A. B1
- B. B2
- C. B12
- D. B6
Explanation
Intestinal bacteria can synthesize several B-group vitamins, including vitamin B12, which is also important for red blood cell formation and nervous-system function. Students may choose B1 because gut bacteria can produce some thiamine, but B12 is the standard example asked in this context.
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Biotechnology applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.
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