The antibiotic teixobactin was discovered in January 2015. Teixobactin kills some bacteria such as Staphylococcus and Mycobacterium.
Most antibiotics work by binding to proteins. Teixobactin binds to lipids that are used in the synthesis of bacterial cell walls. This means that it is unlikely that bacteria will quickly develop resistance to teixobactin.
Which statements explain why bacteria are unlikely to quickly develop resistance to teixobactin?
1 A mutation in the gene coding for a protein allows selection for resistance.
2 Teixobactin binds to a lipid rather than to a protein.
3 The structure of a lipid is not encoded by DNA.
1 )
1, 2 and 3
2 )
1 and 2 only
3 )
1 and 3 only
2 and 3 only
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