Ivanovsky discovered the virus first. Dmitri Ivanovsky, a Russian biologist, discovered the tobacco mosaic virus in 1892 while investigating a disease affecting tobacco plants. He found that the infectious agent could pass through filters that trapped bacteria, leading to the ...
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Rhizobium is a symbiotic nitrogen-fixing bacterium. It forms a mutualistic relationship with leguminous plants, inhabiting their root nodules. In exchange for nutrients from the plant, Rhizobium converts atmospheric nitrogen into a form usable by the plant, aiding in its growth.
The reason for the curdling of milk is Lactobacillus. This bacterium ferments lactose, the sugar in milk, producing lactic acid. The acid causes milk proteins to coagulate and thicken, forming curd. This is a natural process in making curd and ...
Dalton used symbols for elements to represent a definite quantity of that element, specifically one atom of that element.
Dalton was the first scientist to use symbols for elements in a very specific sense.