LIFE SCIENCE

Detailed explanation-1: -Antonie van Leeuwenhoek drew this first recorded image, published in 1684, of bacteria when he observed plaque scrapings from his teeth through a microscope. It was almost two hundred years after this discovery of bacteria that Louis Pasteur and Robert Koch proved that some bacteria could cause disease.

Detailed explanation-2: -Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.

Detailed explanation-3: -Leeuwenhoek is universally acknowledged as the father of microbiology. He discovered both protists and bacteria [1]. More than being the first to see this unimagined world of ‘animalcules’, he was the first even to think of looking-certainly, the first with the power to see.

Detailed explanation-4: -However, due to their minuteness, their existence was not revealed until fairly recent times, around 1680, when Antony van Leeuwenhoek (1632–1723) (22), a Dutch dry goods merchant, observed and described first microorganisms in the tartar from his teeth with his primitive microscope.