Question

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Answer 1

Explanation:

2.Penicillin was discovered when Fleming noticed a mold that was stopping bacteria from growing in a petri dish. Australian scientist Howard Walter Florey made the penicillin mold into a medicine. Together with another scientist Ernst Boris Chain, Fleming and Florey were given the Nobel Prize for Medicine in 1945.

3.Microbes are used to reduce pollution. They are used to increase soil fertility by fixing atmospheric nitrogen. Microbes are also useful in preparing many medicines and antibiotics. Certain microbes are also used in the biological treatment of sewage and industrial effluents.

Answer 2

Explanation:

2.penicillin was discovered by Alexander Fleming at st.mary's hospital,London in 1928.Actually he named it as "mould juice",but later it was discovered

3.microorganisms uses

•They provide many things like Changing the milk to cheese,curd ect....

•They are used in alcohol and beer production(yeast)

•some microorganisms serve as antibiotics for disease

•Fungi such as mushroom can be edible and has some nutritional value

•The bacteria like rizhobium azetobacter ect.... attached to the root nodules of leguminous crps and make them protein rich by converting the atmospheric nitrogen into usable form

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