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DevinKoch's postulates were developed to establish a causal relationship between a microorganism and a disease, based on criteria like pure culture and reproducing the disease in a healthy host. However, viruses lack some key characteristics required by Koch's postulates, such as being able to grow on artificial culture media and the ability to replicate outside of a host cell. Therefore, these postulates cannot be directly applied to viruses.
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Where do pathogenic bacteria usally live?
Pathogenic bacteria can live in various environments such as in soil, water, surfaces like countertops and doorknobs, and on or within living organisms including humans, animals, and plants. They can thrive in conditions that are conducive to their growth and reproduction.
Test to distinguish between benzene and cyclohexene?
One way to distinguish between benzene and cyclohexene is through a bromine water test. Cyclohexene will react with bromine water, turning it from orange/red to colorless due to the addition reaction with the double bond in cyclohexene. Benzene, being a stable aromatic compound, will not react with bromine water and the orange/red color will remain.
