EVERYDAY SCIENCE

Detailed explanation-1: -In 1928, at St. Mary’s Hospital, London, Alexander Fleming discovered penicillin. This discovery led to the introduction of antibiotics that greatly reduced the number of deaths from infection.

Detailed explanation-2: -He named the ‘mould juice’ penicillin. Later, he would say: “When I woke up just after dawn on September 28, 1928, I certainly didn’t plan to revolutionize all medicine by discovering the world’s first antibiotic, or bacteria killer.

Detailed explanation-3: -The discovery of penicillin, one of the world’s first antibiotics, marks a true turning point in human history-when doctors finally had a tool that could completely cure their patients of deadly infectious diseases.

Detailed explanation-4: -Thus, the correct answer for this question is B, i.e. Bacteria (Staphylococcus).

Detailed explanation-5: -Sir Alexander Fleming was born at Lochfield near Darvel in Ayrshire, Scotland on August 6th, 1881. He attended Louden Moor School, Darvel School, and Kilmarnock Academy before moving to London where he attended the Polytechnic. He spent four years in a shipping office before entering St.