NEET Biology question
Match the following columns.
List-I: (A) Escherichia coli (B) Rhizobium meliloti (C) Bacillus thuringiensis (D) Pseudomonas putida
List-II: (1) Nif gene (2) Digestive hydrocarbons of crude oil (3) Human insulin production (4) Biocontrol of fungal disease (5) Biodegradable insecticide
Answer: (A)
Solution
Genetically engineered *Escherichia coli* is widely used to produce recombinant human insulin, matching (3). *Rhizobium meliloti* carries the Nif (nitrogen fixation) genes responsible for symbiotic nitrogen fixation, matching (1). *Bacillus
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