Answer:
According to the susceptibility towards antimicrobial agent the ranking from most susceptible to least susceptible is as:
enveloped virus > gram-positive bacteria > gram-negative bacteria > endospores > prions
Enveloped viruses are most susceptible because their envelope is made up of lipid which is easily disrupted or degraded by antimicrobial agents like detergent.
Gram-positive bacteria are only having one layer of cells wall that is made up of peptidoglycan which is susceptible to most antibiotics but gram-negative bacterial have an extra outer layer of covering made up of lipopolysaccharide so many of them show multidrug-resistance.
Endospore are among the most resistant microbial structure which is formed outer to cell wall and do not allow most antimicrobials to enter the cell.
Prions are infectious protein so antimicrobial agent do not work on prions and it also resist its chemical degradation therefore it is least susceptible.
Answer:
Endospores.
Explanation:
Microorganisms usually adapt to changes in their environment. One example of an extreme survival strategy employed by certain low G+C Gram-positive bacteria, generally of the Firmicute family, is the formation of endospores. They have a very peculiar structure that helps with this survival feature: an outer proteinaceous coat surrounding the spore provides much of the chemical and enzymatic resistance. Beneath the coat there is a very thick layer of specialized peptidoglycan called the cortex, which aids in resistance to high temperature. They are resistant to desiccation, lysozyme, ultraviolet and gamma radiation, chemical disinfectants, starvation AND temperature. So, in this experiment, it is probable that the boiled broth contained endospores, which survived this heating and then reactivated its metabolism.
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Controls it automatically. The body doesn't have to do anything to make it go