Bacteria are not able to survive in pickles with excess salt because their protoplasms get shrunk due to osmotic pressure, leading to dehydration and death. This process, called plasmolysis, inhibits bacterial growth and preserves the pickles.
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Root nodules are found in some leguminous plants and also in some other plants. These nodules house nitrogen-fixing bacteria, such as Rhizobium, which convert atmospheric nitrogen into a form usable by the plant, aiding in plant growth and soil fertility.
The bacteria which directly convert atmospheric nitrogen into nitrogenous compounds are called nitrogen-fixing bacteria. These bacteria, such as Rhizobium and Azotobacter, play a crucial role in the nitrogen cycle by making atmospheric nitrogen available to plants in the form of ...
The smallest organism among the options provided is the virus. Viruses are much smaller than bacteria, mycoplasma, and yeast. They are submicroscopic infectious agents that can only replicate inside the living cells of a host organism.
Louis Pasteur is renowned for his contributions to the germ theory of diseases and the process of fermentation of alcohol. His work revolutionized microbiology and medicine, leading to the development of vaccines and pasteurization techniques to ensure food safety.