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Biotechnology Principles and Processes

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  1. Two bacteria found to be very useful in genetic engineering experiments are
    1. Escherichia and Agrobacterium
    2. Nitrobacter and Azotobacter
    3. Rhizobium and Diplococcus
    4. Nitrosomonas and Klebsiella
Correct Option: A

Escherichia and Agrobacterium are both used as vectors in genetic engineering. Nitrobact converts nitrites to nitrates. is a free living nitrogen fixing bacteria. Nitrosomonas converts ammonia to nitrite. Rhizobium is a symbiotic nitrogen fixing bacteria living in the root nodules of leguminous plants. Diplococcus pneumoniae causes pneumonia.


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