Compared with insulin extracted from cattle or pigs, recombinant human insulin is better because it
Correct answer: C. has exactly the human amino acid sequence and rarely causes allergic reactions
- A. works without binding to any receptor
- B. contains DNA as well as protein
- C. has exactly the human amino acid sequence and rarely causes allergic reactions
- D. never needs injection
Explanation
Animal insulins differ slightly in sequence and can provoke immune reactions, while bacterial factories produce authentic human insulin in bulk. It still binds the same receptor and still needs injection.
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About Biotechnology and Health Care
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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