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- Give two reasons why E. coli is naturally resistant to antibiotics like Penicillin?Explain how an enzyme can be useful in treating a bacterialinfection, such as that which occurs with cystic fibrosis.A conjugation-deficient strain of A. radiobacter is used to combat crown gall disease. Explain how this bacterium prevents the disease, and describe the advantage of using a conjugation-deficient strain.
- What is the mechanism that makes Bacteria resistant to Beta-lactamsGive the reason why is an organism such as Staphylococcus adapted to growth on the human skin but the streptococci are generally not shows?Describe and explain the difference in results if Staphylococcus aureus were used instead of Escherichia coli.