This is false, and is directly contradicted by posts 349 and 356.
Some references
Predicting the emergence of antibiotic resistance by directed evolution and structural analysis. Orencia, M. Cecilia; Yoon, Jun S.; Ness, Jon E.; Stemmer, Willem P. C.; Stevens, Raymond C. Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA, USA. Nature Structural Biology (2001), 8(3), 238-242.
Evolution of an antibiotic resistance enzyme constrained by stability and activity trade-offs. Wang, Xiaojun; Minasov, George; Shoichet, Brian K. Department of Molecular Pharmacology and Biological Chemistry, Northwestern University School of Medicine, Chicago, IL, USA. Journal of Molecular Biology (2002), 320(1), 85-95.
This is false, and is directly contradicted by posts 349 and 356.
Resistance to outside agents is not a new function. All life needs that to survive. It does not turn the bacteria into something new or into anything different or more complex. A new function would be resistance to outside agents not to a single particular outside agent. A change in hair color does not turn a woman into a new species even though it may make her look a bit more attractive. These simple changes are not evolution. Evolution requires new organs, new genes, new abilities, new functionality, and single mutations do not provide that.