Multiple choice

Animalcule, a microbial organism, was observed using a single-lens microscope by

  1. Christian Gottfried Ehrenberg

  2. Carl Woese

  3. Louis Pasteur

  4. Antonie van Leeuwenhoek

  5. Robert Koch
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bacteria were first observed by Antonie van Leeuwenhoek in 1676, using a single-lens microscope of his own design. He called them 'animalcules' and published his observations in a series of letters to the Royal Society.

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