Different methods of sterilisation are used to kill microorganisms.The method which kills the microorganisms by disrupting their DNA is
Correct answer: B. Radiation
- A. Dry heat
- B. Radiation
- C. Fltration
- D. Moist heat
Explanation
The correct answer is radiation. Ionizing radiation, such as gamma rays or X-rays, is used in sterilization because it can penetrate cells and disrupt their DNA, leading to the death of the microorganisms. This method is particularly useful for sterilizing medical equipment and other materials that cannot withstand heat.Dry heat and moist heat sterilization methods kill microorganisms through thermal denaturation of proteins and other cell components, rather than by disrupting DNA.Filtration removes microorganisms from solutions by physically trapping them in a filter but does not affect the DNA or kill the microorganisms, which makes it unsuitable when complete destruction is necessary.
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About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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