There are several mechanisms of bacterial resistance to antibiotics.

As far as the current research results are concerned, there are four main mechanisms for bacteria to produce drug resistance: one is that bacteria produce one or more hydrolases or passivation enzymes to hydrolyze or modify antibiotics entering bacterial cells, so that they lose their biological activity; Second, the target of antibiotics is mutated or modified by an enzyme produced by bacteria, which makes the antibacterial drugs unable to function, and the structure of the target enzyme of antibiotics changes, which reduces its affinity with antibiotics; Third, it is due to the change of bacterial cell membrane permeability or other related characteristics; Fourth, bacteria have an active transport mechanism that depends on energy, that is, it can pump drugs that have entered cells out of cells. Some successful strategies to control the emergence of drug resistance: strictly control the antibiotics related to the emergence of drug-resistant bacteria, do not restrict the use of antibiotics with low potential drug resistance, do not use ineffective antibiotics, the period of antibiotic treatment should not be too long, and intermittently use antibiotics to treat low fever with persistent leukocytosis. Do not use antibiotics to treat high fever caused by non-communicable diseases. \x0d Compare the similarities and differences between Rhizopus and Mucor. \x0d Rhizopus and Mucor belong to Mucor order, and their hyphae are septate and multinucleate. Asexual reproduction produces unfertilized sporangium spores, while sexual reproduction produces diploid zygospores. The main difference is that Rhizopus has rhizomes and creeping hyphae. When Rhizopus grows on culture medium or natural substrate, the arc-shaped peristalsis hyphae produced by vegetative hyphae spread around, and the rhizomes produced by peristalsis hyphae contact with the substrate. The sporangium group grows upward at the position opposite to the rhizome, forming sporangium at the top, while the mycelium of Mucor is in the form of cotton wool, which can be widely spread on or in the substrate. "