What did Anton van Leeuwenhoek discover and when?
Van Leeuwenhoek discovered "protozoa" - the single-celled organisms and he called them "animalcules". He also improved the microscope and laid foundation for microbiology. He is often cited as the first microbiologist to study muscle fibers, bacteria, spermatozoa and blood flow in capillaries.
In 1676, van Leeuwenhoek observed water closely and was surprised to see tiny organisms - the first bacteria observed by man. His letter announcing this discovery caused widespread doubt at the Royal Society but Robert Hooke later repeated the experiment and was able to confirm his discoveries.
- Hooke's drawings show the detailed shape and structure of a thinly sliced piece of cork. When it came time to name these chambers he used the word 'cell' to describe them, because they reminded him of the bare wall rooms where monks lived. These rooms were called cells.
- It was Antony Van Leeuwenhoek (1632-1723), a Dutch draper and scientist, and one of the pioneers of microscopy who in the late 17th century became the first man to make and use a real microscope. He made his own simple microscopes, which had a single lens and were hand-held.
- He was happy to continue his work in Delft. Leeuwenhoek's second wife, Cornelia, died in 1694, when Leeuwenhoek was 61 years old. Antonie van Leeuwenhoek died aged 90 on August 26, 1723. He was buried in the Old Church in Delft.
Anton van Leeuwenhoek: A history of the compound microscope. Anton van Leeuwenhoek (1632 - 1723) was a Dutch tradesman and scientist, best known for his work on the development and improvement of the microscope and also for his subsequent contribution towards the study of microbiology.
- The cell's DNA is like the books in a library because a larger cell would have to make greater demands on its available genetic "library". In time, the cell's DNA would no longer be able to serve the increasing needs of the growing cell, like a town growing in size borrowing books from a small library.
- The chemicals that regulate the cell cycle are cyclins. Also about a dozen of proteins help regulate the cell cycle. They work by regulating the timing of the cell cycle in eukaryotic cells.
- Each of your cells has a boss, too: the nucleus. This control center runs the show, instructing the cell to carry out basic functions, such as growth, development and division. Most of your body's genetic material -- its deoxyribonucleic acid, or DNA -- is located inside the nucleus.
Updated: 26th October 2019